The trailer tongue jack wheel has the characteristics of super high temperature resistance, Temperature: -50 F to + 250 F. to ensure that the cipher wheel can be used for many years, and the high quality can adapt to various environments and weather. High Resistance: Canvas Fiber filled Phenolic for High Impact Resistance. High Temperature Resistance Trailer Jack Wheel: This trailer jack wheel replacement have a high resistance to impact damage while providing protection for floors in commercial and industrial settings. This 8" x 2" phenolic heavy-duty kingpinless swivel caster offers high capacity, durability, and easy rolling on hard floors Quality Assurance: First of all, thank you for choosing our Phenolic wheel. Caster Sizes: Designed to reduce frustration and enhance safety, this round trailer jack wheel can be used anytime, be it loading or unloading your trailer. Multiple Sizes Available: This trailer skid wheels are available in four sizes: 8 inches, width: 2 inches, top plate: 4x 4-1/2, total height: 9-3/4., Also has high Loading Capacity:1500 LB Heavy Duty Swivel Bearing Caster Wheels Rubber Bas... - Grandado Swivel Casters Albion - Swivel Top Plate Caster: Phenolic, 6" Wheel Dia, 3" Wheel 8x2 Trailer Jack Wheel Provides superior floor protection. This 8 x 2 Phenolic Swivel Caster offers high weight capacities, and easy roll ability on clean, debris-free floors. Featuring weight capacities of 300 to 8,000 pounds per wheel, the 90 Shore D wheel is made from phenolic resin mixed with macerated canvas and has an operating temperature range of -50° F to 250° F Widely Use: The Phenolic wheels have a wide range of applications which can carry heavy objects, and guarantees perfect operation.