Features:*Deep groove ball bearings*100% brand new and high quality*Made of high-quality materials, durable and practicalSpecifications:*Material: Metal*Color: Black (As Pictures Show)*Model For : 6001Z 6002RS 6003RS 6004RS 6005RS 6006LUV 6200RS 6201Z 6202Z 6203RS 6204Z 6205-2RSPackage Contents:5 pairs/10pcsNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow 1-3cm measuring deviation due to manual measurement.3. More Quantity,More Discount