Features 4PCS IN 1 SET: Includes 4pcs sliding pulleys, with standard size and sufficient quantity for easy replacement of old or damaged pulleys. DOUBLE DRIVE: These door sliding pulleys are double drive design, which is smooth and noiseless in operation, sliding freely without stuttering. STAINLESS STEEL: These sliding rollers are made of excellent stainless steel material, which is rust and corrosion resistant and has a long service life. EASY TO INSTALL: The silent sliding pulley has standard size and mounting holes, easy to install and not easy to fall off, which is safe and reliable. WIDE APPLICATION: Widely used in sliding door, sliding window and cabinets, etc. to replace broken sliding rollers, with strong practicability. Specification: Item Type: Door Sliding Roller Material: Stainless Steel Roller Outer Diameter: Approx. 11mm / 0.4in Base Length: Approx. 65mm / 2.6in Base Thickness: Approx. 16mm / 0.6in Mounting Hole Diameter: Approx. 5mm / 0.2in Package List:4 x Pulley Note:Match the appropriate size before installation. Package List 4 x Pulley