Transform your stationary conical into a mobile one with these easy to assemble locking wheels! Each wheel secures to either the conical frame, or our optional Leg Extensions, with standard 1.5 inch tri-clamps. All three casters feature foot-operated locks to keep the fementer stable. Our wheels are ideal for use on smooth, flat surfaces.,,Set comes with 3 Casters, 3 Tri-Clamps, and 3 Gaskets.