Planet X Pro Carbon 82/101 Wheelset - Shimano/SRAM Front hub: Planet-X Superlight, black anodized, 16 hole, 100mm spacing, sealed cartridge bearings.Rear hub: Planet-X Superlight, black anodized, 24 hole, 130mm spacing, sealed cartridge bearings. Compatible with Shimano/SRAM cassette. 8, 9 and 10 speed. Front rim: 16 hole 82mm structural carbon tubular, drilled for internal nipples. Rear rim: 24 hole 101mm structural carbon tubular, drilled for internal nipples. Spokes: Pillar black bladed, built radial on the front, 2-cross on both sides rear. Nipples: Alloy, internal. Wheels come with carbon specific brake blocks and QR skewers. Weight: Front - 806g. Rear - 1114g.