Features: 6700ZZ Bearings,size: (inner diameter approx 10mm, outer diameter approx 15mm, thickness approx 4mm) Made of high quality Bearing Steel instead of carbon steel. High-speed operation, high temperature-resistance,low noise, stable rotation. These brand new bearings come straightfrom the factory and are fully tested. Wide range of applications: for motors, power tools, automobiles, household appliances, etc. Accurate and versatile, with good noise and vibration detection performance. Lubricating oil pre-lubrication reduces friction and requires no maintenance. Package Includes: 10PCS x Bearings Specifications: Item No:6700ZZ Bearing Inner Diameter:approx 10mm Outer Diameter:approx15mm Height:approx4mm Precision:ABEC-1 Type:Single Row Deep-Groove Ball-Bearings Materail:Alloy Steel Packing:10PCS/Set Sealing: Carbon Steel note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.