The Backstage Equipment Horizontal Monitor Cross Bar for Mag Mini Carts anchors to two 5/8' baby pins at each end of the cart, one on the U-handle and one on the nose. This allows you to mount multiple optional 'Slide-On' 5/8' baby pins to run along the length of the bar. Made of steel, the bar can support up to three optional 17' monitors side-by-side. The Monitor Horizontal Cross Bar can be offset by up to 9.75' towards the back or front of the cart by using two optional offset arms.