Weihang Caster Best Quality Custom 3.5 Inch Flashing Skate Wheels Factory,The structure of the caster is made up of a single wheel mounted on the bracket, which is used to install under the equipment so that it can move freely.
Material ： Pu tyre and pp hub core
Load capacity： 50（kg）
About Weihang Caster
The benefits and advantages of Polyurethane Skate Wheels:
Polyurethane (P.U.) is a composite made of plastic (thermoplastic polymer) used in the manufacture of inline skates. It was first used in 1979 in the manufacturing of skateboard and skate wheels,
Polyurethanes are outstandingly able to withstand more loads than rubber because they are harder than rubber and yet more flexible than plastics. Their flexibility is accountable for their strength and remarkable ability to resist impact.
Their abrasion resistance ability is rated to be 10 times better than what other materials can provide.
Highly capable of resisting oil and chemicals
Noise reduction, shock absorption, and floor protection.
Better grip and traction,Polyurethane tends to be a grippy material, so its higher coefficient of friction can help keep skateboard or cart from flipping