This painted steel Quick Pik Lite outer crosstube assembly from MillerIndustires fits the I-400 wheel lift on Challenger 4700 Series light-dutywreckers. The driver side 3 square tube accepts driver side L-Arms (Part No.12-0904277) & the passenger side 3″ square tube accepts passenger side L-Arms(Part No. 12-0904278), otherwise known as tire restraints and wheel retainers. Quick Pik Lite style receiver Fits 3″” x 3″” crossbar Option of driver or passenger position Painted steel Welded grabhooks Pull plunger pin Spring plunger pin Driver side (12-0902786) accepts driver side L-Arm Part No. (12-0904277) Passenger side (12-0902787) accepts passenger side L-Arm Part No.(12-0904278)Fits: Challenger 4700 I-400 Wheel Lift