Features 1、This ball bearing is mainly made of high quality bearing steel and stainless steel material, durable with resistance to wear and collision 2、Built-in precise micro bearing, with the characteristic of high stability and long service life 3、 Low speed, elegant performance and rolling smoothly 4、It has excellent high temperature resistance, up to 120 degrees 5、Standardization size, used for machine tool, electronic equipment, pump industry, airship, reducer, plastic machine, motor, textile machinery Specification Features: This ball bearing is mainly made of high quality bearing steel and stainless steel material, durable with resistance to wear and collision. Built-in precise micro bearing, with the characteristic of high stability and long service life. Low speed, elegant performance and rolling smoothly It has excellent high temperature resistance, up to 120 degrees. Standardization size, used for machine tool, electronic equipment, pump industry, airship, reducer, plastic machine, motor, textile machinery. Specifications: Model: MR85ZZ Material: bearing steel, stainless steel Inner diameter: 5mm / 0.20in Outer diameter: 8mm / 0.31in Thickness: 2.5mm / 0.10in Weight: 5g Package included: 10 x Ball bearing Package List