Item Description:Features:Unique ladder structure, it can open multiple aperture.It can , chamfer and open hole, but ordinary twist drill can't.Little rock, it can carve out a nice aperture without firstly using a center punch.Water to make ti cool while working, it can effectively extend the service life.ing, chamfering, elliptical hole enlargement, twist drills, drills, table drills.Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet,ect.Specifications:Material: HSSSize: app.app.10.6x1cm/4.17x0.39in5-35mm (13 steps: 5mm, 7mm, 10mm, 12mm, 15mm, 17mm, 20mm, 22mm,25mm, 27mm, 30mm, 32mm, 35mm）Color: Golden, as pictures shownQuantity: 1 PcItem Specification:DIY Supplies: WoodworkingType: Otherlength: -Use: Wood Drilling
