YINETTECH 2PCS Front Axle Cups for 5/16 Hub & Rear 3/8 Mountain Bike Bicycle Accessories with 2 Bearings

The package contains: 4 pcs silver MTB bicycle hub front and rear axle cups, which include 2 bowls fit for 5/16 front axle and 2 bowls fit for 3/8 rear axle. Also, you will get 4 bead holders. Function: The front and rear axle bowls of the mountain bike hub are the parts that fix the bearings on the front and rear axles of the bicycle. They provide smooth rotation and support to reduce wheel friction to keep your bike wheels running properly. Material: These MTB bike hub front and rear axle cups are made of durable metal material, which provides solid support and long life for your bike. Easy to Install: These mountain bike hubs front and rear axle cups are relatively easy to install. Depending on your bike's specifications and needs, you can properly install the bowl and bead holder to ensure the normal operation of your bike. Care and Maintenance: Check and clean the bowl and bead holder regularly to make sure it is working