3/16 wall 2x4 bumper, .120 wall 2x2 and 2x3 swing out arm, 1750 comp 4x4 spindle setup, destaco 341 toggle latch, bumper has been tied into frame with custom 90 degree brackets so it is not all hinging on crossmember. i built a cooler rack that is 30 x16 on the top.