Bearing material: bearing steelExternal profile: U-shapedSize:Inner gap :6mm/ Outer diameter :30mm/ trench bottom :23.8mm/ Thickness :10mmWeight: About 10gColor: BlackPackage Contents:1 pcs U Groove Roller PulleyFeatures:1.Sliding door and window roller bearing metallic 626 bearing is made from high quality steel, has good corrosion resistance and wear resistance, can stand up to lots of load and pressure, to guarantee the sturdiness and life of the product.2. This bearing design is exquisite, extremely compatible for the use of sliding doorways and Windows, can provide stable, noiseless rotation and tender operation, upgrade the opening and shutting trip of doorways and Windows.3.626 bearing length is accurate, appropriate for many sliding doorways and Windows, and installation is simple, no legitimate tools, can be changed and put in at home.4. Sliding door and window curler bearing metal 626 bearing is cheap in fee and cost-effective, which is an economical answer for families and commercial places. In addition, its excessive power and durability also enormously minimize the will for replacement and maintenance, saving money.5. In addition to standard sliding doors and Windows, 626 bearings can be used for other goods that desire bearings, akin to skateboards, pulleys, typical family appliances, etc., with quite a lot of applicability.Notes:1.Please allow 1-2cm differences due to manual measurement, thanks.2.Please perceive due to light irradiation or pc exhibit difference, so I cannot guarantee photographs and genuine shade is the same.