Features: Zinc alloy material, no rust, durable. Increase the bearing, smooth and silent. High quality nylon discs, wear resistant. Flexible operation, stable quality and long service life. Keep the door balanced to prevent swinging and make sure smooth sliding.
Specifications: Condition:100% Brand New Material: Zinc alloy Color: As shown in the picture Size: Approx.120*15mm/4.7*0.6in
Package List: 2 * Roller