Metalworking & Multipurpose Drill Bits / Gun Drill Bits4PCS/SET--21-42MM(21mm, 27mm, 32mm, 42mm)6PCS/SET--16-35MM(16mm, 18mm, 20mm, 22mm, 25mm, 35mm)6PCS/SET--20-40MM(20mm, 22mm, 25mm, 30mm, 35mm, 40mm)6PCS/SET--22-65MM(22mm, 30mm, 35mm, 45mm, 50mm, 65mm)10PCS/SET--16-50MM(16mm, 18mm, 20mm, 22mm, 25mm, 30mm, 32mm, 35mm, 40mm, 50mm)10PCS/SET--16-53MM(16mm, 18mm, 20mm, 22mm, 25mm, 30mm, 35mm, 45mm, 50mm, 53mm)13PCS/SET--19-75MM(19mm, 22mm, 25mm, 30mm, 32mm, 35mm, 38mm, 45mm, 50mm, 55mm, 65mm, 70mm, 75mm)