4pcs/Lot Countersink & Deburring Bits 2-5mm 5-10mm 10-15mm 15-20mm Tool Set Expanding Drill Step Drill Bit 4241 size :2-5 mm 5-10mm 10-15 mm 15-20mm A brand-new, unused, unopened, undamaged item This 4 piece Countersink and Deburring Tool Set is ideal for cutting through metal, wood and plastic quickly and easily Point angle: 90 degree