I'm selling this box of 50. Below are the spec. Model# 54604 The self-locking sleeve minimizes sliding. It creates a fast secure connection for temporary or permanent connections. Quickly attaches chain, rope and accessories. Stainless steel Self-locking sleeve minimizes sliding Creates fast secure connection for temporary or permanent connections Quickly attaches chain, rope and accessories No tools necessary 3/8in X 4in 500 lbs Working Load Limit |