Axle material: AL7075 International 6 Hole Front 2 sealed bearrings, Rear 4 sealed bearings Spokes:Front 28H / Rear 28H O.L.D: Front 100mm / Rear 135mm For Shimano 8,9,10,11s Cassette speed system Only apply to round spoke or flat spoke within 2.2mm Weight: Approx. 564g (F166g/R 398g) (not included skewers) Color: Red (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