【Set Includes】4*4 wheel trolley, 8*M10 bolt, 12*nut. NOTE: The correct bolt installation orientation is to keep the bolt head in the groove.
【Applicability 】4-wheel trolley for use with 1-5/8" wide and all standard 1-5/8" or higher post channels,load 770 lbs.
【High-Quality Material】The middle support of the trolley is solid steel, with high strength and strong resistance to rust. The surface is galvanized and has strong rust resistance. The rollers use deep groove ball bearings and are supported by stainless steel, running smoothly and without noise.
【Easy Operation】When using, just push the wheel into the pillar channel, the package contains 3 nuts, you can use the cart upside down.
【Smooth Design】The bolt is hidden in the middle of the fastening groove of the cart, so the cart will not be stuck. And the wheels are designed with mute, and the running process is stable. Each trolley is about 0.35kg.