Uxcell Round Shank Spiral Flute 15 Step Drill Bit, 4mm to 32mm, Gold Tone Product Name : Step Drill Bit;Material : Metal Color : GoldTone;Shank Size : 10 x 22mm/ 0 4" x 0 87"( DT ) Cutting Dia : 4-32mm/ 0.16"-1.26";Total Length : 10.2cm/ 4" Weight: 167g Package Content : 1 x Step Drill Bit