Countersunk flat head. Diamond point. Stem ring. Hard. 30 lbs. Cube. Size: 20d Length: 4 inches. Finish: Hot dipped galvanized Diameter: 7 ga Head diameter: 3/8 in. Shank Type: Ring Head Type: Countersunk Flat Point Type: Diamond Pack Size: 30 lbs. Nails per pound: 35 Warning: Cancer and reproductive harm. -- www.P65warnings.ca.gov -