Womdee Countersink Drill Bit With Center Punch 8 Pack For Woodworking, Wood Screw Countersink/Pilot Hole Drill Bit Set, Woodworking Chamfering Counter Bits Carpentry Reamer Plated Diameter 3-10mm

Woodworking Countersink Drill Bits Set Features: 1. Heat treated & tempered high-carbon steel with Titanium Nitrate coating for superior cutting power. 2. Use on steel, aluminum & other metals, plastic or wood. 3. Enlarge or countersink holes, deburr edges, 5-degree chamfer. 4. Tricuspid centering. Very accurate centering for sharp and precise countersinking, non-slip. 5. Straight shank is the most usual style on modern drill bits, universal for bench drill. 6. Fast discharge chips from the hole on both sides automatically. Size: 3mm(Dia)x61mm(L) 4mm(Dia)x75mm(L) 5mm(Dia)x85mm(L) 6mm(Dia)x92mm(L) 7mm(Dia)x100mm(L) 8mm(Dia)x109mm(L) 10mm(Dia)x120mm(L) Diameter of 3-8mm Chamfer:15.8mm/10mm Chamfer:18.8mm How to Use Countersink Drill Bit? Step 1 -- Rotate the Hex Key to adjust the length you need. Step 2 -- Insert the countersink bit into your drill/driver. Make sure the drill bit is clamped. Step 3 -- Vertically drilling to the required depth. The depth only needs to be that to allow the screw head to sink below the surface. Step 4 -- Get a nice, smooth countersunk hole in your work-piece! Package includes: 7 x Woodworking chamfer 1 x L-wrench