This 6" x 2" orange MAX-Efficiency polyurethane-on-aluminum wheel caster is designed and constructed to deliver ease of movement when pushing or pulling carts or equipment, and part of our most popular industrial caster series. MAX-Efficiency wheels are formulated to provide best-in-class ergonomics and durability, and feature maintenance-free sealed precision ball bearings for smooth and quiet mobility. 44 Series casters also feature quality USA-made rigs and a 3-year warranty. All swivel rigs also feature a 3/4" kingpin, which lasts significantly longer than the standard 5/8" kingpin. RoHS compliant zinc plating provides an attractive finish which increases corrosion resistance for longer caster life. Looking for even higher levels of ergonomics or quietness? Check out our !