Model: Novatec hub A271SB/ F372SB (black or red colour). Cassette body: Shimano 9/10/11s, campagnolo 10/11s. Model: Mac aero 494 spokes (black colour available).Hole: Front 20H, Rear 24H, External hole. Lacing: Front: Radial Rear: 2X cross drive side, Radial Non-drive side. Material: Aluminum nipples (black/red/silver colour available). Colour of Decals: No Sticker/ White Sticker/ Black Sticker/ White and Red Sticker. Under normal riding, if there is any damage not caused by human factors, products can be replaced from us.