Step Drill Bit 32mm Triangle Auger Drill 4-32mm/4-20mm/4-12mm Triangular Shank Drill Spiral Groove Step Triangular Pagoda Shape 1set 3pcs/drill bit set

Product Features: 1, The ladder of its unique structure, a bit can open a variety of specifications of aperture. 2, Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.3, Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable, but it is possible.4, The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit,recommend drilling rate of 250-250 RPM.Specification:4-32mm (4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm)4-20mm (4,6,8,10,12,14,16,18,20mm)4-12mm (4,6,8,10,12mm)Shank: 6mm (dia), 25mm (L)Allow 1-3mm measurement error.Material: High speed steel 4241（Optional 1）Package include:1X 4-32mm Titanium Step Drill（Optional 2）Package include:1X 4-20mm Titanium Step Drill（Optional 3）Package include:1X 4-12mm Titanium Step Drill（Optional 4）Package include:1X 4-12mm Titanium Step Drill1X 4-32mm Titanium Step Drill1X 4-20mm Titanium Step DrillGeneralMaterial:Packing ListProductPackage Weight:0.265kg (0.584lb)Package Size:12cm x 12cm x 12cm (4.72in x 4.72in x 4.72in)