Nobody here has a vise for pins, in many shops they didn't even know what it was or what they looked like. Plastic parts where the hole should be in a deeply recessed part of the part. I couldn't use my dremel with my chosen 1/8" long nozzle as the lowest speed on the dremel will almost certainly melt the plastic! drilled all the necessary holes. Problem solved. Comes with 4 different sized collets for holding Different diameters of bits, pins, awl tips, miniature screwdriver blades, wire, etc. are supplied.Remember that collet pairs are pairs with two ends, one pair on the tip and the other pair in the grip.