KCNC Grooving QR MTB Titanium Axle Hub Skewer, Black, KQR05-002BK, SK2240- Material: AL 7075 lever and nuts- 6/4 Ti axle with stainless springs- Specs: Front 100mm / Rear 135mm- OEM package (This item is exactly as pictured and does not include retail package)Contents : 1 pairs (Front+ Rear)/set