Durable Rubber Finger Grips For Comfortable Use, Impact & Rust Resistant Nickel Plated Nose, Stainless Steel Interior Parts & Pressure Activated Ball Groove System For Rapid Loading & Strong Retention, Provides Quick & Easy Accessory Changes Without Rechucking, Accessories Have Hex Shank Locking System To Prevent Slipping, Holder Fits All Brands Of 3/8" & 1/2" Cordless & Corded Drills.

• Drill, countersink and counterbore in one step
• Four-cutter countersink and tapered drill bit provide superior speed and ideal finish
• Replacement tapered bits offered