3/8" Swivel Self-Locking Hook - Grade 80Grade 80 Swivel Self Locking Hook The Grade 80 Swivel Self Locking Hook is designed for overhead lifting and rigging applications where both load security and proper load alignment are essential. Manufactured from high strength Grade 80 alloy steel, this hook combines an automatic self locking mechanism with a swivel design that helps position the hook correctly before lifting, reducing twisting and improving load control. The self locking mechanism