All-mountain and trailbike riders will appreciate this wheelset's 20mm front hub. Sturdy WTB straight gauge spokes for strength. 20mm thru-axle front; standard QR rear w/ skewer Rims: Mavic 317 eyeletted disc rims Rear hub: Shimano M475; 6 bolt disc; 9 speed compatible Front hub: Formula 20mm thru-axle; 6 bolt disc black rims, spokes, and hubs with silver nipples rimstrip included drilled for presta Weight Rear: 1250 grams w/ skewer Front: 950 grams This is anOE, or original equipment item. Components with thisdescription are from brand new bicycles which have been previously assembled,but never ridden. OE items may be delivered in plain packaging and may notinclude instructions. Because these items were removed from complete bicycles,they may show minor marks from the installation process. Each OE item has beenchecked to verify that it meets the same high standards as our other products,and Jenson USA offers the original warranty that comes with a consumer packeditem.