High Temperature Resistance Heavy Duty Casters: HANDSAMMU'S Phenolic Caster replacement have a high resistance to impact damage while providing protection for floors in commercial and industrial settings. The Heavy Duty Caster wheels has the characteristics of super high temperature resistance, Temperature: -50F to + 250F. WHEEL SPECIFICATION: Industrial caster diameter: 4 inches, width: 2 inches, top plate: 4x 4-1/2", total height: 5-5/8".Four Caster can support load 3600 lb, strong load-bearing capacity, so you can buy and use with confidence. High Resistance: Canvas Fiber filled Heavy Duty Phenolic Casters for High Impact Resistance. Provides superior floor protection. In addition, the Phenolic Caster wheels replacement has the characteristics of wear-resistant mute, smooth and durable, etc., to ensure that the Industrial Caster wheel can be used for many years, and the high quality can adapt to various environments and weather. WIDELY USED: The Heavy Duty Wheels can be easily installed and used, and are designed for handling.These Casters are commonly seen on high-end furniture dollies, carts, dolly cart casters, Workbench,U-boat Cart and many Industrial cart casters. These wheels are made to outperform and outlast the competition. QUALITY ASSURANCE: First of all, thank you for choosing HANDSAMMU'S heavy duty casters. If you have any questions or quality problems about caster wheels, please contact us in time, we will solve the problem for you as soon as possible. Product specifications: Wheel material: Phenolic Wheel diameter: 4 inches Wheel width: 2 inches Top Plate: 4x 4-1/2 Total Height:5-5/8"" Load capacity: 3600LB Wheel color: Black Number of Casters: 4