Feature 1These mini bearings are made of high quality bearing steel for low noise and long service life 2They are double shielded to avoid contaminants entering and save lubricant 3Bearings have a 6mm inner diameter, a 13mm outer diameter, a 5mm thickness and a 15mm flange 4These are great for small hobby 6mm shaft/rod projects such as electric motor, 3D printer, quadcopter or ship model 5There comes total 10 pieces mini bearings which you may use for many different projects Mini flanged ball bearings areavailableball bearings ofquite small size. These mini ball bearingshave a 6mm inner diameter, a 13mm outer diameter, a 5mm thickness anda 15mm flange.Ball bearings of this size are ideal for precision work and applications that require a lot of functional mechanical parts in a small space, such as electric motor, 3D printer, quadcopter or model. Features: These mini bearings are made of high quality bearing steel for low noise and long service life. They are double shielded to avoid contaminants entering and save lubricant. Bearings have a 6mm inner diameter, a 13mm outer diameter, a 5mm thickness anda 15mm flange. These are great for small hobby 6mm shaft/rod projects such as electric motor, 3D printer, quadcopter or ship model. There comes total 10 pieces mini bearings which you may use for many different projects. Specifications: Material: Bearing steel Inner Diameter: 6mm / 0.23" Outer Diameter: 13mm / 0.51" Thickness: 5mm / 0.19" Flange Diameter: 15mm / 0.59" Quantity: 10pcs Package Includes: 10 x Bearings