Features 1、High adoptability depends on that fixing bracket is manufactured by aluminum alloy material, which is with oxidized surface. 2、And shaft bracket can withstand heavy weight, which is with light weight and high strength in the practical life. 3、More secure to be fixed, exquisite base is practical, which keeps guaranteed quality. 4、Built to strict quality control standards, such kind of hardware tool's design is improved for more adoptability in life. 5、Via precision craft by many experts, the rail accessory is with strong durability for long time. Specification Item Type: Fixing bracket Model: SK20 Outer Diameter: Approx. 60mm / 2.4in Inner Diameter: Approx. 20mm / 0.8in Thickness: Approx. 20mm / 0.8in Purpose: General Weight: Approx.0.082 kg / 0.2 lb Lubricant: No lubrication Oil Lubrication Method: Drop oil lubrication Product Size: Approx. 6 x 5 x 2cm / 2.36 x 1.97 x 0.79in Package List 2 x Fixing Bracket SK20