Entire Clip is galvanized to resist corrosive and rusting action.
Sizes 3mm through 62mm and 75mm have forged bases.
Clip sizes up through 38mm have rolled threads.
Based on he catalog of breaking strength of wire rope, Crosby wire rope clips have an efficiency rating of 80% for 3 through 22mm sizes, and 90% for sizes 24mm through 90mm