9mm Round Shank Twist Step Drill Bit Set for Pocket Hole Drill Jig Guide Kit with Wrench

Features: It can work with standard chucks of 9mm diameter. Small tip includes clearance hole for screw shank Large Diameter creates flat bottomed hole Recommended for use with corded high rpm drills Perfect for use with pocket hole guides Come with wrench and limit ring Specification: Big head diameter: 9mm Small head diameter: 4.2mm Purpose: used for drilling wood Package list: 1 * bit 1 * small wrench 1 * location ring