Rychtarski All-Road V.4

You need to know 3 dimensions to know if they'll work: diameter, that's easy, 12mm. thread pitch, this will either be 1, 1.5 or 1.75. from the picture I think safe to assume 1.75 but if you can find a way to double check probs best. Lastly length, and this is a tricky one because all axle sellers love to quote the hub width but that's no use to you, because the axle length is the hub width plus the thickness of the dropouts on each end of the hub. You need to know the total distance from the outside of one dropout to the outside of the other, this is the total axle length you need. I went through this same trial last month and in the end went with Robert Axle Project lightning bolt ons because although they're pricey they have full specs on the website so you know they'll fit. SJS Cycles stock a lot of sizes.