3" Husky Workbench Brake Casters3" Husky Work Bench Brake Casters Part # HUSKY WORKBENCH 4B Plastic caster wheels are solid injected molded polyolefin which yields a high shock load, impact resistant, and abrasion resistant wheel. These wheels are lightweight yet hold high weight capacities and are also non marking. They also are washable, impervious to water, and highly resistant to solvents, oils, grease, most chemicals, and cleaning solutions. These wheels do not flat spot over