* 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 135×10mm: various Swiss and Shimano. Length: 162.5mm* 02: T1707 E-Thru trainer axle M12x1, with metric fine thread. For hubs with axle skewer attachment 142×12mm: 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 142×12mm: 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 142×12 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 135×12, 142×12, 150×12 mm and Trek ABP 142×1. Length: 179.5mm