Type: Oil disc brake lever cam modification parts bearing, turning point modification, solve the abnormal noise of the brake lever, repair parts accessory for the bike.Packing List: 8 precision miniature bearings(4 bearings have been installed in 2 stainless steel bearing sleeves), 2 CNC micro shafts and 2 stainless steel bearing sleeves.Function: Realize the perfect non destructive replacement of the original brake lever cam, solve the abnormal noise and slow return of the brake lever, and improve the brake feel.Portable: The bike cam modification parts is lightweight and portable, you can exchange your faulty parts in a few minutes and install easily.Durable Material: The oil disc brake handle modified bearing made of stainless steel, high strength, stable performance, durable for a long time, high strength and not easy to break. Specification: Material: Stainless SteelSize: 8cmx5cmx3cm/3.15inchx1.97inchx1.18inch Package Includes: 8 Precision Miniature Bearings(4 Bearings Have Been Installed In 2 Stainless Steel Bearing Sleeves)2 CNC Micro Shafts 2 Stainless Steel Bearing Sleeve Note: Please allow slightly errors due to manual measurement and different monitors.