Features & Benefits:

• All cones are self-centering for accuracy
• 2 cones for holes up to 40mm
• 4 reverse cones for bolts and nuts up to 19mm
• Machined aluminum for durability
• Pointers fit all tram gauges

These universal self centering cones will make all measuring more accurate.  No more guessing whether you are in the center of the hole or bolt. They attach to 3/8" pointers that will fit in all tram gauges.