- 【Good Quality Metarial】 – Made of HSS 4242 with titanium nitride coating .high hardness,strength and longevity.
- 【Size】Shank diameter: 10mm(0.39”) for 4-32; 8mm(0.31”) for 4-20; 6mm(1/4”) for 4-12;Hole Cutter step included: 4-12/20/32mm.
- 【Design】Shank: hex shank;Groove: spiral ; Surface treatment: Nitriding black.
- 【Usage】 -Used with pistol drill or bench drill, water it to cool while working to prolong its life, the proper drilling speed is 250-400 rpm.Suitable for these work-pieces that hardness is lower than 25 degree and the thickness is beyond 4mm, such as aluminum parts, insulation board, PVC plate, etc.
- 【 Family Tools】A necessity for family or handyman or professionals – Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
