3" 4" 5'' TPR bolt hole swivel caster wheel for shopping cart                                                            

Housing:

Made of pressed steel, zinc plated

Ball bearing swivel head

Transparent dust-proof seal

Wheel:                             

Materials: Polyurethane / TPR

Bearing type: Precision ball bearing       

Hardness: 90±5 Shore A

Temperature range: -20℃～80℃

Feature: 

• Excellent noise-free PU twin wheel with precision ball bearing.
• Non-marking and quiet. Rolls easily on floor.
  
• High performance nylon housing with ball bearing in swivel head.