BTA 9712
Adapts a thru axle hub bike for a trainer.
Only compatible with current classic series trainers, not pro series.
Fits most 142-148 Thru axle bikes with 1.0 or 1.75 thread pitch (Supports Boost148)

BTA 9707
Adapts a thru axle hub bike for a trainer.
Compatible with CycleOps Classic and Pro Series Trainers.
Fits most 142x12mm Thru axle bikes with 1.0 or 1.75 thread pitch (Not Boost148 compatible)

BTA 27300
Adapts a thru axle hub bike for a trainer.
Only compatible with current classic series trainers, not pro series.
Fits most 142-148 Thru axle bikes with 1.0 or 1.50 thread pitch (Supports Boost148)