Foredom 30 Handpiece & Chuck Key Quick Change Handpiece Flex Shaft Machine Tools SR motor quick change handpiece wiIth chuck key. Ideal for shaft machine, user for jewels, jade polishing and trimming, can chuck with 0-4mm drill bit. 1 x Foredom 30 Handpiece & Chuck Key Better Safety: Eliminate the dangerous temptation of withdrawing the shank from the collet, extend the bit to provide the full depth of cut instead of short shanking your router bits.