Offers mobility to heavy loads on smooth, hard surfaces and finished concrete floors where quiet movement and floor protection are major considerations. Use on carpet, ceramic, concrete or wood. 355.0548 has 1-7/8 x 2-9/16 in plate size. 094.8281 has 2-3/4 x 3-7/8 in plate size. 545.9524 has 3-1/8 x 4-1/8 in plate size. 796.7292 has 4 x 5-1/8 in plate size. Features Soft rubber wheels give mobility to heavy loads on smooth hard surface and finished concrete floors where quiet movement and floor protection are major considerations Not safe with acid, heat, oil and water