DT Swiss HGC 1400 Spline 30 Front Wheel - 700c 12 x 100mm Center-Lock BlackDT Swiss HGC 1400 Spline 30 Front Wheel 700c 12 x 100mm Center Lock Black. While DTs Hybrid Endurance wheels are made to deliver maximum speed on tarmac the Hybrid Gravel wheels will deliver maximum fun on gravel roads. The HGC 1400 Spline is the exclusive answer for all high end E gravel bikes that set the benchmark in a new cycling segment. With a select mix of high end E specific components this wheel has the pedigree to be the uncontested King of