* Brackets: Forged steel plate, taper roller bearing with hardened treatment in the swivel head which is advantageous to excellent durability, grease nipple, strong welded frame, self-aligned function with two swiveling axes with different swiveling radii, bolted wheel axle structure
* Surface Treatment: Powder coating,Zinc plated
* Wheel: Cast polyurethane(Shore A95), steel core, two ball bearings
