Stainless Steel rigid Caster Model 9 is made of 304 stainless using a stamped steel construction and is excellent for corrosive applications. The legs of this caster and the mounting plate are made from ¼” thick 304 stainless steel. This caster is ROHS and NSF compliant. This stainless steel rigid caster uses a 1/2” diameter axle. Choose rigid casters when you must maneuver a load up and down ramps, or if you need to go in a straight line often. This Stainless Steel Model 9 caster performs best if you limit the load to no more than 1200 lbs per rigid caster.