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At
Tool Shack Web, we are dedicated to providing top-quality products that meet the diverse needs of professionals across various industries. Our specialized line of tools, the Mastercool series, stands out as a premier choice for those seeking high-performance equipment. Designed with the demands of both everyday mechanics and industrial applications in mind, Mastercool tools are engineered to deliver unparalleled reliability and precision.


Our Mastercool line is a testament to our commitment to excellence, featuring a comprehensive range of mechanical equipment and power tools that cater to a broad spectrum of tasks. Whether you're a seasoned mechanic, a construction professional, or an industrial worker, the Mastercool tools offer advanced functionality and durability to tackle even the toughest jobs.


The Mastercool series includes a variety of essential tools designed to enhance productivity and efficiency. From precision instruments and heavy-duty power tools to specialized mechanical equipment, each tool in this line is crafted to provide maximum performance and ease of use. These tools are built with high-quality materials and innovative technology to ensure they stand up to rigorous use, making them a reliable choice for any professional's toolkit.


In addition to their robust construction, Mastercool tools are known for their versatility. The product range covers a wide array of applications, including automotive repair, industrial maintenance, and construction tasks. This versatility allows users to rely on Mastercool tools for various needs, reducing the need to invest in multiple brands or products.


Our role as a leading tool supplier means we understand the importance of offering products that not only meet but exceed industry standards. Mastercool tools are carefully selected to align with our commitment to quality and performance, ensuring that every tool we offer delivers exceptional value. By choosing Mastercool, you are investing in tools that provide long-lasting reliability and superior results, backed by our dedication to customer satisfaction and product excellence.


Explore the Mastercool series at Tool Shack Web and experience the difference that high-quality, specialized tools can make in your work. Whether you are upgrading your current toolkit or starting anew, our Mastercool line is designed to meet the highest standards of performance and durability, making it an indispensable part of your professional equipment collection.


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Intellasense II Refrigerant Leak Detector Mastercool 55900 Intellasense II Refrigerant Leak Detector
MSRP: $292.90
Tool Shack Price: $201.15
133 in stock
Pocket Analog Thermometer Mastercool 52220 Pocket Analog Thermometer
MSRP: $12.06
Tool Shack Price: $8.55
113 in stock
Universal Valve Core Remover/Installer (R12 and R134A) Mastercool 81290 REMOVER CORE VALVE R134A
MSRP: $10.41
Tool Shack Price: $7.50
98 in stock
R134a 1/2" Acme-M Self Sealing Design Can Tap Valve Mastercool 85512 R134a 1/2" Acme-M Self Sealing Design Can Tap Valve
MSRP: $22.14
Tool Shack Price: $13.29
72 in stock
Mastercool 98234 R134a High Side Octagon Socket Mastercool 98234 R134a High Side Octagon Socket
MSRP: $18.19
Tool Shack Price: $11.75
68 in stock
Mastercool 82634 Straight Adapter Replacement Gasket Mastercool 82634 Straight Adapter Replacement Gasket
MSRP: $9.95
Tool Shack Price: $6.95
52 in stock
Mastercool 82010-10 Service Hose Replacement Parts Mastercool 82010-10 Service Hose Replacement Parts
MSRP: $8.18
Tool Shack Price: $4.88
45 in stock
Straight Charging Adapter R134a Mastercool 82272 Straight Charging Adapter R134a
MSRP: $10.02
Tool Shack Price: $6.31
44 in stock
Mastercool 285212 Red Knob Mastercool 285212
Red Knob
MSRP: $7.29
Tool Shack Price: $4.71
40 in stock
Standard Valve Core Kit for R134a Mastercool 58531 Standard Valve Core Kit for R134a
MSRP: $112.35
Tool Shack Price: $78.93
39 in stock
32 oz. Bottle Vacuum Pump Oil Mastercool 90032-6 32 oz. Bottle Vacuum Pump Oil
MSRP: $12.26
Tool Shack Price: $12.90
37 in stock
Alum Bond® A/C Repair Epoxy 7 oz. Mastercool 90935 Alum Bond A/C Repair Epoxy 7 oz.
MSRP: $25.92
Tool Shack Price: $18.31
36 in stock
Universal Valve Core Remover For R12 Mastercool 91290 VALVE CORE TOOL UNI
MSRP: $10.41
Tool Shack Price: $7.50
35 in stock
Mastercool 69500-Dr Filter Dryer Mastercool 69500-Dr
Filter Dryer
MSRP: $16.60
Tool Shack Price: $10.80
34 in stock
Replacement Gasket For 1/4? Fitting Mastercool 42010-10 Replacement Gasket For 1/4 Fitting
MSRP: $9.99
Tool Shack Price: $3.65
30 in stock
NITROGEN LEAK TEST KIT W/AUTOMOTIVE COUPLER Mastercool 53010-AUT NITROGEN LEAK TEST KIT W/AUTOMOTIVE COUPLER
MSRP: $281.26
Tool Shack Price: $182.13
29 in stock
3/16" Adapter Mastercool 71097-03 3/16" Adapter
MSRP: $14.36
Tool Shack Price: $11.32
28 in stock
Mastercool 53513-UV Mastercool Mini True UV Flashlight Mastercool 53513-UV Mastercool Mini True UV Flashlight
MSRP: $34.89
Tool Shack Price: $24.84
28 in stock
Mastercool 85510 Screw On Can Tap Valve for R134a Mastercool 85510 Screw On Can Tap Valve for R134a
MSRP: $14.57
Tool Shack Price: $11.31
26 in stock
Mastercool 53123-Yf 1234yf Oil/Dye Injector Mastercool 53123-YF 1234yf Oil/Dye Injector
MSRP: $149.47
Tool Shack Price: $109.39
26 in stock
Mastercool 91120 1-3/4" Pocket Analog Thermometer Mastercool 91120 1-3/4" Pocket Analog Thermometer
MSRP: $23.58
Tool Shack Price: $14.63
25 in stock
R134a Valve Core Remover and Installer Mastercool 81490 R134a Valve Core Remover and Installer
MSRP: $59.63
Tool Shack Price: $40.01
24 in stock
Replacement Lens for 2-1/2" Gauge Mastercool 85253-E Replacement Lens for 2-1/2" Gauge
MSRP: $9.99
Tool Shack Price: $3.37
24 in stock
Valve core remover installer for 1234YF vehicles Mastercool 58490-YF Valve core remover installer for 1234YF vehicles
MSRP: $140.11
Tool Shack Price: $98.44
24 in stock
Filter Pack for Commanders R134a 2 Dryer System Mastercool COMD2-FLTRPK Filter Pack for Commanders Dryer Sys
MSRP: $191.22
Tool Shack Price: $144.29
24 in stock
Mastercool 52225-Med Medical Grade Thermometer Mastercool 52225-Med
Medical Grade Thermometer
MSRP: $121.86
Tool Shack Price: $71.90
23 in stock
Piercing style can tap valve R1234YF Mastercool 85510-YF Piercing style can tap valve R1234YF
MSRP: $17.02
Tool Shack Price: $12.28
22 in stock
72" Yellow Hose R134a Mastercool 84722 HOSE 72 YELLOW R134a W/QK SEAL
MSRP: $37.63
Tool Shack Price: $26.08
21 in stock
Mastercool 85525 R134a Recharge Kit - Buy Tools & Equipment Online Mastercool 85525 R134A Recharge Kit
MSRP: $29.46
Tool Shack Price: $16.47
20 in stock
Mastercool 98134 R134a Low Side Octagon Socket Mastercool 98134 R134a Low Side Octagon Socket
MSRP: $15.95
Tool Shack Price: $10.29
19 in stock
Mastercool 89661-AYF Mastercool 134A / 1234YF dual aluminum gauge set Mastercool 89661-AYF Mastercool 134A / 1234YF dual aluminum gauge set
MSRP: $290.18
Tool Shack Price: $220.88
18 in stock
Brass Manifold for R134A with 60" Hoses Mastercool 66661 Brass Manifold for R134A with 60" Hoses
MSRP: $115.77
Tool Shack Price: $85.89
16 in stock
Mastercool 71097-04 1/4" Adapter - Buy Tools & Equipment Online Mastercool 71097-04 1/4" Adapter
MSRP: $17.76
Tool Shack Price: $11.49
16 in stock
Professional UV Leak Detection Kit Mastercool 53351 Professional UV Leak Detection Kit
MSRP: $96.77
Tool Shack Price: $64.07
15 in stock
High Side R134a 14mm-F x 16mm Quick Manual Coupler Mastercool 82834 COUPL R134 MAN HIGH SIDE
MSRP: $45.89
Tool Shack Price: $29.23
15 in stock
2-1/2" Low Side R-134A/R-12 Replacement Gauge Mastercool 85350 2-1/2" Low Side R-134A/R-12 Replacement Gauge
MSRP: $30.69
Tool Shack Price: $20.31
15 in stock
Sensor Tip for 55100, 55200, 55300 and 55400 Mastercool 55100-SEN Sensor Tip for 55100, 55200, 55300 and 55400
MSRP: $18.03
Tool Shack Price: $11.46
14 in stock
Mastercool 82031 Fitting Adapter Vac Pump Mastercool 82031
Fitting Adapter Vac Pump
MSRP: $18.21
Tool Shack Price: $13.42
14 in stock
Mastercool 84372 72" R-134a A/C Hose Set Mastercool 84372 72" R-134A A/C Hose Set
MSRP: $79.62
Tool Shack Price: $49.68
13 in stock
Mastercool 91207 Charging Adapter Depressor Kit Mastercool 91207 Charging Adapter Depressor Kit
MSRP: $7.93
Tool Shack Price: $6.73
13 in stock
R-12/R-134a Valve Core Repair Kit Mastercool 91337 R-12/R-134a Valve Core Repair Kit
MSRP: $97.58
Tool Shack Price: $59.98
13 in stock
Raptor Refrigerant Electronic Leak Detector Mastercool 56100 Raptor Refrigerant Electronic Leak Detector
MSRP: $239.74
Tool Shack Price: $171.73
13 in stock
Deluxe R1234A to 1234yf Conversion Kit Mastercool 83736-K Deluxe R1234A to 1234yf Conversion Kit
MSRP: $134.49
Tool Shack Price: $94.85
13 in stock
Mastercool 91049-128 1 Gallon Non-Toxic Self Evaporating Ac Flush Mastercool 91049-128
1 Gallon Non-Toxic Self Evaporating Ac Flush
MSRP: $55.83
Tool Shack Price: $36.97
13 in stock
Low Side R134a 14mm-F x 13mm Quick Manual Coupler Mastercool 82934 COUPL MAN R134 LOW SIDE
MSRP: $45.89
Tool Shack Price: $29.23
12 in stock
Mastercool 69788-Fltrpk Commander Replacement Filter Pack Mastercool 69788-FLTRPK Commander Replacement Filter Pack
MSRP: $178.34
Tool Shack Price: $143.97
12 in stock
Refrigeration ratchet wrench Mastercool 70082 Refrigeration ratchet wrench
MSRP: $14.34
Tool Shack Price: $11.31
12 in stock
Mastercool 82375 2 Oz A/C Oil Injector R134a Mastercool 82375 2 oz A/C Oil Injector R134a
MSRP: $54.83
Tool Shack Price: $36.97
11 in stock
GM and Ford A/C Orifice Tube Remover and Installer Mastercool 91002 GM and Ford A/C Orifice Tube Remover and Installer
MSRP: $25.71
Tool Shack Price: $14.81
11 in stock