Countersink Drill Bit Set with Center Punch 8 pack

Countersink Drill Bit Set with Center Punch 8 pack

• SIZE: 6mm (1/4 inch), 8mm (5/16 inch), 9mm (3/8 inch), 10mm (2/5 inch), 12mm (1/2 inch), 16mm (5/8 inch), 19mm (3/4 inch). 130mm（5 inch）
• HIGH QUALITY: The flute countersink drill bit set is made from standard high speed steel and super hard titanium coated bits. The automatic center punch is made of pure brass.
• GOOD WORKING: Center hole punch creating a starting point that prevents screws and drills from wandering. Countersink drill holes into wood and soft metals countersunk screws and fixings.
• GREAT DESIGN: 1/4 inch hex shank drill are fine for a quick change. They don’t slip in drill chucks. Delivers an automatic spring driven strike when pressed against surface
• MULTIFUNCTIONAL USES: Ideal for wooden planks, plastic, soft metal, fiber board, particle board, plywood, aluminum board etc. Meanwhile compared with ordinary the drill accuracy more high.

<b>How to Use:<br/> <br/>1.Using the automatic center punches to mark the work piece with a dimple, creating a starting point. <br/>2. Connect the countersink drill, then start to work being the starting point. <b>Feature:<br/> <br/>A. Center punch can adjustable cap regulates striking force. <br/>B. Countersinking is a two step process: pilot hole first, followed by the countersink. <br/>It's effective, but time consuming. However, a wide variety of combination countersinks do both tasks at the same time. <br/> <b>NOTE:<br/> <br/>The most important thing to keep in mind when using a countersink is to match the size correctly to the screw being used. <br/>A too large countersink will swallow the head of a screw in what will look like a moon-sized crater; <br/>A too small countersink won't fit the screw head, and forcibly driving the screw in can tear the wood fibers around the countersink. <br/>If you don't drill the countersink deep enough, the screw will remain proud of the surface; go too deep and the screw will seat too shallow. <br/> <br/><b>Product Specification:<br/> <br/><b>Material:</b>High Speed Steels <br/><b>Package include:<br/> <br/>1 x 6mm Drill <br/>1 x 8mm Drill <br/>1 x 9mm Drill <br/>1 x 10mm Drill <br/>1 x 12mm Drill <br/>1 x 16mm Drill <br/>1 x 19mm Drill <br/>1 x Automatic Center Punch