FMS 1400 Servoless Retract Aluminum Upgrade Kit for FMS Part# RE003. Included: 1 - FMS 1400 Retract Aluminum Upgrade Kit (Aluminum sides only), 2 - M3 E-Clips Kit upgrades a single retract. Retract NOT INCLUDED For use with FMS Part# RE003 ONLY. CNC Machined from Billet Aluminum Very strong and light weight