Features and Benefits:

• Each set consists of an inside micrometer head and a series of fully hardened and lapped extension rods of different lengths
• Anvil and spindle are hardened and precision ground with microlap finish on ends
• Spindle thread hardened, ground and lapped
• .001" Microfine graduations on satin chrome
• Positive locking nut on spindle

Meets or exceeds Federal accuracy specs. Reference standard included with set. Includes a wrench and fitted case.