ALWAYSH 7 Piece hss 5 Flute Drill Bit Set Countersink Wood Screw Bit Chamfer for Various Length Screws by Simply Loosen and Tighten the Screw, 3-6mm Tool Set

Material: Made of HSS 4241 Material: Black Chamfer Drill Body Material: #45 Steel Bevel: Unique 90-degree bevel Quality: Heat-treated and hardened carbon steel with titanium nitrate coating for superior cutting power Usage: Use on steel, aluminum, plastic, and wood. The drilling length can be adjusted for different situations simply by loosening and tightening the screw. Dimension: 3mm (Dia) x 60mm (L) 4mm (Dia) x 75mm (L) 5mm (Dia) x 85mm (L) 6mm (Dia) x 93mm (L) 7mm (Dia) x 10mm (L) 8mm (Dia) x 11mm (L) 10mm (Dia) x 12mm (L) Features: 1, Made of HSS 4241 drill bit 2, Black chamfer drill body: #45 steel 3, Single flute edge chamfer 90 degrees 4, Heat treated and tempered high carbon steel with titanium nitrate coating for superior cutting power 5, Using on steel, aluminum, plastic and wood. The drilling length can be adjusted for different situations simply by loosening and tightening the screw