Features:
Fine workmanship, practical, flexible and smooth rotation.
Aluminum alloy material, high strength, nice hardness, not easy to deform.
Not easy to rust, long service life.
Practical lubrication, smooth, fine user experience.
Small and portable, easy to install.

Specifications:
Material: aluminum alloy
Item weight: 126g / 4.4ounce
Package size: 65 * 65 * 50mm / 2.6 * 2.6 * 2.0in
Package weight: 138g / 4.9ounce

Packing List:
1 * Bicycle Bearing Set