6" Heavy Duty Toolbox Caster Set with Phenolic Wheels - 1200 Lbs Capacity per Caster - High Impact Resistance - Resistant to Oils, Grease, Chemical - 2 Swivel Casters w/Brakes and 2 Rigid Casters

6" x 2" Phenolic Wheel / 7-1/2" mounting height Highly resistant to impact damage; Highly resistant to oil, grease, and 10% acidity. 4" x 4-1/2" top plate; 2-5/8" x 3-5/8" to 3" x 3" bolt hole spacing 1200 pounds capacity per caster - 4,800 LBS PER SET OF 4 Zinc plating for Rust Resistance & Zerk grease fittings for easy grease points