Deep Thread, Secure Grip & Easier Driving in Wood Tapered Shank, Dowel Effect & Greater Grip When Used with Wall Plugs Traditional Prodrive Head, Countersunk for a Neat Finish.
1. Head: Flat countersunk head. 2. Recess: Pozi,Torx. 3. Rigidity: Hardened. 4. Plaing: Zinc plated+Wax.