Features 1、Stainless Steel Shaft: The shaft of this pulley is made of stainless steel material, not easy to bend, stable and not falling off, durable. 2、PP Wheel: The wheel is made of PP material, sturdy structure makes it not easy to break or deform, reliable and durable. 3、Standard Production: Our pulleys are well made with standard size, smoothly sliding, no jamming, easy installation and low noise. 4、Wide Application: Our pulleys are widely used in sliding door, sliding window, cabinet, etc. And 5 pieces in the package to meet your needs. 5、Ideal Replacement: These pulleys with outstanding performance and easy installation, ideal replacement for the old and damaged parts. Specification Item Type: Single Wheel Pulley Material: PP, Stainless Steel Wheel Outer Diameter: Approx. 30mm/1.2in Base Length: Approx. 68mm/2.7in Base Thickness: Approx. 13mm/0.5in Mounting Hole Diameter: Approx. 4mm/0.2in Package List 5 x Single Wheel Pulley