Feature:1. Double V-type wheel adopt motor grade bearings, which can effectively improve work efficiency2. Come with high thermal strength, bending strength and fatigue resistance strength3. Can be used for a long time in the temperature range of -40-100, wear resistance and self-lubricity are also superior than most engineering plastics4. Stainless steel material, possess corrosion resistance, heat resistance, high temperature resistance, and ultra low temperature resistance5. Possess good comprehensive mechanical properties, high strength, and beautiful surfaceSpecification:Item Type: V-Type WheelMaterial: Stainless steelOuter Diameter: Approx. 24.8mm / 1inInner Diameter: Approx. 5mm / 0.2inSize: Approx. 10.2mm / 0.4in6mm / 0.2in.Package List:5 x V-Type Wheel