Quick view ECR Performance Relay 5 Pin Pigtail Socket Base Holder Mounting Sold by the Unit . Relay 5 Pin socket block. Can be tie together with multiple of the same blocks to increase the amount of relays They can be fastened to panels with #6-10 screws. *For quantities of 5 or more, check bulk pricing above. MSRP: Was: Now: $1.95 Add to Cart