6-60mm Large HSS Spiral Groove 12 Step Drill Cone Drill Bit Cutter HEALTH & BEAUTY the drilling sleeve with bearing

the drilling sleeve with bearing drilling sleeve

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6-60mm Large HSS Spiral Groove 12 Step Drill Cone Drill Bit Cutter HEALTH & BEAUTY the drilling sleeve with bearingFeatures: The stepped drill bit build in 12 steps drilling size(6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm). One time enlarger holes, no need to replace the drill bit and positioning hole during using. The step cone cutter made of HSS and Titanium coating on the surface. Anti rust, anti wear and heat, made longer life. Automatically deburr holes as you drill. Widely used to cut holes in a variety of material like steel,