Giant's all new SL 1 Disc Centre-Lock Wheelsystem features lightweight alloy construction, weighing in at just 1870g (per full wheelsystem). With a modern 23mm wide and 30mm deep rim profile, SL 1 feature Giant alloy centrelock disc hubs and are clincher and tubeless compatible. SL 1 are built using Giant's Dynamic Balanced Lacing system - so spoke tensions balance out as riding forces are applied, resulting in a stiffer, more efficient wheel.