Precision ground point, flutes, body, clearance and drill diform for ultimate accuracy and performance - Drill bit for use with pocket hole joinery. - Small spike includes clearance hole for screw shank. - Large diameter creates flat bottomed hole. - Recommended for use with wired high RPM exercises. Due to manual shooting, there will be deviations between the actual object and the picture, but it will not affect the use effect. Specification: Material: HSS titanium coated with Shank Size: 1/4 Hex or 9.35mm round Bit size: 3/8 (9.5mm) Overall length: 6.29 (160mm) Quantity: 1pc Features: - Drill bit for use with pocket hole joinery. - Small spike includes clearance hole for screw shank. - Large diameter creates flat bottomed hole. - Recommended for use with wired high RPM exercises. How to use: 1. Set drill height. 2. Clip board you want to drill. 3. Put the bit in the hole in the wood. 4. Drill up to 5mm (remember not drill against wood). 5. Start the exercise reaches a certain speed above 500 rpm, 1500 rpm is the best. 6. advanced to slow down, such as before the end of end exercise in half or full, then can speed up. Package included: 1pc x Twist Step Wick 1pc x Key 1pc x 9.5mm (3/8) Stop Collar