MPC PK-B1 (0498) Door Popper Kit 45 LB solenoids w/relays and harnesses - (Solenoid/Bracket Assembly Dimensions: 2.5" x 2.5" x 6") (4) Chrome door poppers (2) 4-button transmitters capable of controlling each door individually, plus 2 additional functions...use them for remote windows, linear actuators Braided steel linkage cable and mounting hardware Free safety relay and waterproof emergency release button