Both professionals and hobbiest, rejoice! The Excel Blades’ Excel Blades #58 High Speed Drill Bits Precision Drill Bits is set to become your next favorite tool! This precision product includes 12 mini drill bits, ideal for for Wood, Manual Work DIY, Jewelry, Assembling, Model Making,and is made of premium carbon steel.The item # 50058 is made of high carbon steel.This products works in conjuntion with Excel Blades’ pin vises: 55661, 70003, 70011, 70023.It comes with 12 per pack.