GR-3780 Kpmi, valve guide reamers 0.3780 hss

Designed for 3/8" valve guides, this Kibblewhite reamer features a precision diameter of .3780" (9.6012mm). It is constructed from high-speed steel, offering the durability required to ream tough materials such as cast iron, manganese bronze, and Ampco-45 bronze. This tool is a necessity for engine technicians who need to establish precise valve stem clearances during the rebuilding of cylinder heads. The high-speed steel construction ensures a smooth, chatter-free finish, which is vital for the longevity of both the valve and the guide. It is a reliable, high-precision tool for demanding engine machining tasks.