Features 1、100% brand new and high quality. 2、Made of bearing steel material, durable to use. 3、Simple structure with stable performance, easy to use 4、It can be used on joints that can withstand radial loads or combined loads of radial and axial forces. It can also be used on parts that can withstand axial loads, such as small power motors, automobile and tractor gearboxes, machine tool gearboxes, Gene 5、Can be used in gearboxes, instrumentation, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, construction machinery, roller skates, yo-yo, etc. Specification Features: 1. 100% brand new and high quality 2. Made of bearing steel material, durable to use. 3. Simple structure with stable performance, easy to use 4. It can be used on joints that can withstand radial loads or combined loads of radial and axial forces. It can also be used on parts that can withstand axial loads, such as small power motors, automobile and tractor gearboxes, machine tool gearboxes, General machines, tools, etc. 5. Can be used in gearboxes, instrumentation, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, construction machinery, roller skates, yo-yo, etc. Specification: Condition: 100% Brand New Material: Bearing Steel Weight: Approx. 320g / 11.3oz Outer Diameter: Approx. 30mm / 1.2in Inner Diameter: Approx. 10mm / 0.4in Package List: 10Pcs Deep Groove Ball Bearings Package List