Heavy Duty Ball Bearing Nylon Single V Groove Pulley Wheel Zinc Alloy Bracket Sliding Door And Window Rollers High-quality zinc alloy inner frame with nylon housing sliding window rollers designed for smooth, quiet operation. Product Attributes Attribute Value Material Zinc alloy Load capacity 50kg Wheel Color Any color Style Modern design Type Sliding Door And Window Rollers Function Quiet operation Key Features Load Capacity: 50 kg (suitable for heavy sliding glass doors
