12mm Thru Axles for Bike Trainers - M12 x 1.0/1.5/1.75 Thru Axle Adapter for Rear Wheel Attachment Trainer - Bike Trainer Thru Axles Adapter

Works great. Just measure and know the thread pattern.

TL;DR - better than the Saris thru axle at half the price. I ride a Trek Emonda road bike and ride on a Saris M2 trainer. I bought the thru axle from Saris ($50) and used it for a year until I lost one of the screws and beveled spacers that allowed me to attach my bike to my trainer. To be fair, I used this thru axle outdoors when I lost it, which you're not supposed to do, so that's on me. Saris doesn't and wouldn't sell me the one component I needed and was going to make me replace the whole thing for $55. I looked at Robert Axle Project and it was the same price (although they have a great tool to tell you which axle you need for your bike and it's dimensions). Out of sheer annoyance, I took a risk on this product, hoping that it would be what I needed at a very reasonable price ($25). Well guess what, it not only works but I would go as far to say that it's BETTER than the Saris thru axle. It was easier to install, looks better on my bike, and somehow fits my trainer better than the true OEM's product. I cannot recommend this product enough. I never write reviews but I'm writing this out of pure joy that I was able to get what I needed at half the price - and there's some pettiness towards Saris and Robert Axle Project in here too.

Works perfect. Exactly what I needed to use my thru axle bike on my Blackburn trainer

Does the job, but it is a bit longer that needed. Looks strong enough.

A friend gave me an indoor trainer so I could get some riding time during bad weather. Normal thru-axle won't fit on the trainer but this new axle did the trick. Axle included a couple of spacers to fine tune the length to your particular trainer and mine fit well and it sits firmly in the trainer.

Perfect fit I ride on it every day.

Worked as advertised. Make sure you measure your thru-axle for proper fit.

Very good quality. It works very well with my roller.