These tiny drill bits have been incredibly popular since we first brought them in – so now we have added another size assortment! They are a great thing to have at any work bench and are ideal for model builders, cleaning 3D printer nozzles, and drilling small holes! This set of 10 tiny bits range from 0.1mm to 1.0mm in 0.1mm increments. Each carbide bit has a 1/8” (3.175mm) shank which should work with a variety of rotary and hand tools. The smaller bits are incredibly delicate and need to be handled with care!