Countersink Drill Bit+Center Punch,Countersink Drill Bit Set 6 Pcs 1/4'' Hex Shank HSS 5 Flute Countersink 90 Degree Center Punch Tool Sets For Wood Quick Change Bit 6mm-19mm (7PCS)

1/4'' hex shank device countersink drill bits Sets and automatic center punch mainly used for wood openings, reaming, chamfering, screw head and so on. Also applies to MDF, plywood, acrylic, PVC board and soft metal such as aluminum, copper and so on. Features: 1. Made of advanced 45# standard high-carbon steel with super-hard titanium plated to prevent rust and increase the surface hardness. 2. The Automatic Center Punch is made of pure brass, delivering an automatic spring-driven strike when pressed against surface, it can be adjusted cap regulates striking force. 3. Standard 1/4'' Hex Shank and 6 pcs a variety of specifications drill bit. 4. Suitable for DIY, Home and General Building / Engineering Using. How to Use: 1. Using the automatic center punch to mark work piece with a dimple, creating a starting point. 2. Connect the drill bit, then start to work following the starting point. Inside Package: Package include: 1 x 6mm Drill 1 x 8mm Drill 1 x 9mm Drill 1 x 12mm Drill 1 x 16mm Drill 1 x 19mm Drill 1 x Automatic Center Punch