Features: Upgrades your patio Door with our Sliding Glass Door Rollers, featuring a robusts 1 1/4" steel bearing designs for smooth operation and unparalleled durability. These heavy duty tandems wheel are precisions engineered to fit , Part #31761A, ensuring compatibility and ease of installation. Suitable for homeowners look to enhances their home's functionality and service technicians seek reliable replacement parts for repairs. Perfect for both residential and commercial setting, these rollers provide easy gliding for high flowing sliding Door in living room, patios, and office space. Augenweide's commitment to quality means you can expect particular performances and longe from these patio door wheel, making them a investment for any property Upgrades. Specifications: Material: aluminum+brass Hole distance: about 135mm Width: about 2cm Height: about 1.3cm Package Includes: 1xGlass Door Roller note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.