Specification Brand : TEN-HIGH BulletPoint1 : Model: HSR45CA; Length: 138.2mm/ 5.39"; Width: 120mm/ 4.68"; Block fixing bolt size: M12x15 BulletPoint2 : 【ADVANTAGES】Anti-rust surface treatment ensures high accuracy, durability, hardness and stiffness. With pre-drilled holes, easy to assemble. Smooth running without deflection, low friction coefficient, minimal wear and low noise while using. BulletPoint3 : There are some steel balls inside the Block, take care when installing. Otherwise, those steel balls will fall out and hard to put them back. BulletPoint4 : Please refer to Parameters Picture for more detailed information. BulletPoint5 : Package includes: 1pcs HSR45CA Block Color : Silver ExternallyAssignedProductIdentifier1 : 0630456602901 ExternallyAssignedProductIdentifier2 : 630456602901 ItemName : TEN-HIGH HSR45CA Block Bearing for Linear Guide Rail, 1pcs ItemPackageDimensions_Height : 2.36 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 0.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : linear-motion-guides Manufacturer : TEN-HIGH Material : Carbon Steel NumberOfItems : 1 PartNumber : TH-HSR45CA-US ProductDescription : Notes: 1.If there doesn’t have the size you need or have special requirements, we can also customize as long as email us. 2. ABOUT THE BLOCKS: we provide CA type, and CR type. Please choice the product according to your needs. 3.After receive the package, please check the product at first. If there any problem, let us know in time, so that we can provide after-sales services for you. WE DON’T WANT OUR CUSTOMER TO WASTE THEIR TIME AND MONEY, AND WILLING TO PROVIDE THE BEST SERVECES.