ITEM NAME:10pcs 10x22x6mm Deep Groove Pulley Wheel 61900zz Carbon Steel Ball Bearing Product Description Description: Features: 1. Strong load capacity, smooth movement, excellent performance. 2. Not easy to deform 3. High precision, long life 4. Widely used, such as: universal wheel, office equipment, medical equipment, skateboard shoes, fishing gear, etc. Specifications: Internal diameter: 10mm/0.39" Outside diameter: 22mm/0.87" Height: 6mm/0.24" Type: Single row deep groove ball bearing Material: Carbon steel Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3mm measuring deviation due to manual measurement. Included: 10 XÂ Bearing Pulley Wheels.Type: Single row deep groove ball bearing. Included: 10 X Bearing Pulley Wheels. Material: Carbon steel. Height: 6mm/0.24". If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.