Duffy Manufacturing produces Hop-Lok spring-loaded latches. Hop-Lok latches are positive locking and secure gate latches for use on farms, ranches, auction barns, breeding facilities, and veterinary hospitals. With Hop-Lok latches, gates close like doors. Products: 1" spring-loaded gate latch 3/4" spring-loaded gate latch Small stainless steel latch Hanging plant swivel