3" 4" 5" bolt hole PU caster wheel with double brakes
Housing:
Made of pressed steel,zinc plated.
double ballrace swivel head
transparent dustproof seal
Wheel:
Material:Polyurethane
Hardness:90±5 Shore A
Bearing type:Precision ball bearing
Temperature:-20℃~80℃
Feature:
- Polyurethane PU material, silence, Eco-friendly material,
- Wildly use in office chair,hand truck and shopping cart.