Rims: SUNRinglé Helix TR27SL 700C* ETRTO 662-23* External width: 27mm* Inner width: 23mm* Height: 20mm* Performant and durable for Gravel or All Road* Strong sleeve joint* Tubeless compatible* Single Stainless Steel eyelets* For Presta valve* 32 holesFront hub: SUNRinglé SRC* TA12x100mm* 6 Bolt* 2x Sealed bearingsRear hub: SUNRinglé SRC HG* TA12x142mm* 6 Bolt* 3 Double tooth pawl and ratchet system* 12 deg / 30 points of engagement* 4x Sealed bearings* Compatible with 11/12 speed Road (10 speed compatibility requires 1.85mm spacer, not incl.)Rear hub: SUNRinglé SRC XD* TA12x142mm* 6 Bolt* 3 Double tooth pawl and ratchet system* 12 deg / 30 points of engagement* 4x Sealed bearings* Compatible with SRAM XDFully serviceable and convertible hubsAssembled in North America by experienced wheelbuilders with Sapim Race spokes (Black), 14mm Brass Polyax Nipples (Black)