These Trucks DO NOT BEND. Also made with a sturdier box-weld design, the Adjustable Rear Truck is designed with extender attached to allow you to switch over from regular truss work to floor truss webs in less than 2 minutes, all through the pulling of a pin and extracting of extender piece. ONLY NEEDED IF YOU ARE USING YOUR SERVO OR AUTO OMNI SAW FOR FLOOR WEB TRUSSES AS WELL AS THE REGULAR PIECES. Each truck is $360.00. Sold in sets of 10.