Axle material: AL7075International 6 HoleFront 2 sealed bearrings, Rear 4 sealed bearingsSpokes:Front 28H / Rear 28HO.L.D: Front 100mm / Rear 135mmFor Shimano 8,9,10,11s Cassette speed systemOnly apply to round spoke or flat spoke within 2.2mmWeight: Approx. 564g (F166g/R 398g) (not included skewers)Color: Silver (as pic. shown)OEM package (This item is exactly as pictured and does not include retail package)Contents : 1 pair (F+R) with skewers /set