REPAIR TWO DOOR SETS: This convenient Pack of 2 includes everything you need to repair two separate hinged bi-folding door panels. Perfect for restoring smooth operation to double-closet systems or multiple rooms in your home. UNIVERSAL TRACK COMPATIBILITY: Specifically engineered to fit 7/8 inch wide bi-fold door tracks. Compatible with major manufacturers including Acme, Stanley, Kenna, Frame, Primeline, and many others. SMOOTH & QUIET OPERATION: Features a high-quality 7/8 inch diameter nylon roller wheel that ensures a whisper-quiet, effortless glide. Say goodbye to doors that jump the track, stick, or squeak. PRECISION FIT SPECIFICATIONS: Each assembly features a 1/4 inch diameter steel pivot pin and a 3/8 inch diameter plastic base. Designed to fit standard bi-fold doors ranging from 1 inch to 1-3/8 inches thick. DURABLE & SPRING-LOADED: Built with a heavy-duty spring-loaded mechanism, the newlifeapp 9-1135S provides the necessary tension to keep your doors perfectly aligned and securely seated in the track. Upgrade your home hardware with the newlifeapp Premium Bi-Fold Door Top Pivot and Roller Guide Set. If your closet doors are sticking, jumping the track, or making noise, it’s time for a professional-grade replacement. The newlifeapp 9-1135S is specifically engineered to restore the effortless, smooth-sliding operation of your bi-folding door systems. This heavy-duty hardware is a universal fit for many of the industry’s leading closet door manufacturers. Technical Specifications: Brand: newlifeapp Part Number: 9-1135S Pivot Pin Diameter: 1/4 Inch Plastic Base Diameter: 3/8 Inch Roller Wheel Diameter: 7/8 Inch Application: Top Pivot / Roller Guide Quantity: Pack of 2 (Repairs 2 Door Sets)