As an important role to connect bike spoke and axle, this hub set with professional bearings inside will be smooth and silent rolling and great to keep out the dirt and mud.<Br /> <br />feature:<br />package included: 1 front hub, 1 rear hub and 2 skewers.<Br />with 36 hole drillings, compatible with 5/6/7/8s rotary freewheel.<Br />precision-machined steel bearings for a smooth and fast ride.<Br />low-friction seals effectively shut out water, mud and dirt.<Br />quick release lever allows for fast installation and removal<br />internal grease sleeve helps maintain and increase service life of hubs.<Br />aluminum alloy hub shell and anodized processed skewers for easy maintenance and long time last.<Br /> <br />specification:<br />material: aluminum alloy<br />color: black / blue / red / golden(optional)<br />compatibility: 5 / 6 / 7 / 8s rotary freewheel<br />front hub length: 100mm / 3.9In<br />rear hub length: 135mm / 5.3In<br />weight: 291g / 10.2Oz(f), 338g / 11.9Oz(r)<br />package size: 25 * 17 * 5cm / 9.8 * 6.6 * 1.9In<br />package weight: 674g / 23.7Oz<br /> <br />package list:<br />1 * front hub<br />1 * rear hub<br />2 * quick release lever