Bearing material: bearing steelExternal profile: U-shapedSize:Inner hole :6mm/ Outer diameter :30mm/ trench backside :23.8mm/ Thickness :10mmWeight: About 10gColor: BlackPackage Contents:1 pcs U Groove Roller PulleyFeatures:1.Sliding door and window curler bearing metallic 626 bearing is fabricated from superb steel, has nice corrosion resistance and wear resistance, can stand up to a lot of load and pressure, to guarantee the sturdiness and lifetime of the product.2. This bearing design is exquisite, highly appropriate for the use of sliding doors and Windows, can give stable, noiseless rotation and smooth operation, upgrade the hole and closing ride of doorways and Windows.3.626 bearing size is accurate, appropriate for many sliding doorways and Windows, and installation is simple, no reliable tools, can be changed and installed at home.4. Sliding door and window curler bearing metallic 626 bearing is cheap in charge and cost-effective, which is a cost-effective solution for households and advertisement places. In addition, its excessive power and sturdiness also enormously minimize the need for replacement and maintenance, saving money.5. In addition to conventional sliding doors and Windows, 626 bearings can also be used for other goods that want bearings, equivalent to skateboards, pulleys, typical household appliances, etc., with a wide range of applicability.Notes:1.Please enable 1-2cm differences because of guide measurement, thanks.2.Please perceive because of the gentle irradiation or computer exhibit difference, so I can't guarantee pictures and real coloration is the same.