Specifications: Specification: 1)Material: Chrome Steel GCr15 2)Quality: SKF Standard 3)Brand: Boschasia or others 4)Packing: Individual box Features: 1)Size:16~380mm; 2)Series30202-30226,30302-30320,32004-32024,32204-32228,31303-31320,32303-32320,33010-33022,33109-33118,33205-33220,inch. 3)high-speed rotation,low-friction torque,low vibration and low noise.