Suitable for Tacx trainers with rear-wheel drive only 01: T1706 E-Thru trainer axle M10x1, with metric fine thread. For hubs with axle skewer attachment 135√ó10mm: various Swiss and Shimano. Length: 162.5mm 02: T1707 E-Thru trainer axle M12x1, with metric fine thread. For hubs with axle skewer attachment 142√ó12mm: various DT Swiss and Shimano. Length: 162.5mm 03: T1709 E-Thru adapter X-12 (>142 mm) 04: T1711 E-Thru trainer axle M12x1, with metric fine thread. For hubs with axle skewer attachment 142√ó12mm: DT Swiss RWS axle skewer (conical and flat), Syntace X-12 system (Specialized) and various Shimano. Length: 175mm 05: T1710 E-Thru trainer axle M12x1.5, with medium thread. For hubs with axle skewer attachment 142√ó12 including Shimano SM-AX65, SM-AX75, SM-AX76 and SM-AX78. Length: 162.5mm 06: T1708 E-Thru trainer axle M12x1.75, with standard threaded cartridge. For hubs with a Maxle axle skewer attachment 135√ó12, 142√ó12, 150√ó12 mm and Trek ABP 142√ó1. Length: 179.5mm 
