Glass grinder bit adapter



The Hi-Tech Diamond glass grinder bit adapter shrinks glass grinder bits with a 3/8″ arbor hole and converts it into a 5/16″ arbor hole. This bit adapter makes it possible for all grinder bits to fit onto all lap machines.

Simply insert this Hi-Tech Diamond glass grinder bit adapter into any grinder bit that has a 3/8" arbor hole to convert it into a 5/16" arbor hole.

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