deer u road mountain bicycle mtb wheel hub front and rear skewers quick release clip bolt lever axle qr 145/180 mm, a pair (black) deer u deeru aims to provide you , out dear customers the best experience during exercise. <p>our quick releases help you easily install/uninstall the wheels so you can carry your bike anywhere with ease. <p> <b>high quality and brand new</b> <p> <b> specification: </b> <p> material: steel and aluminum alloy <br> axle diameter: about 4.5 mm. <br> front skewer size: 145 mm. <br> front skewer weight: 46 grams. <br>rear skewer size: 180 mm. <br>rear skewer weight: 51 grams. <br> a pair weight: 97 grams <br> color: black/red/blue/gold <p><br> compatible to road bike and mountain bike. <p> <b> package include: </b> <br> one front skewer + one rear skewer