The perfect carrier for modern thru axle road and mountain bikes designed to take all kinds of thru axle without the need for separate adaptors one handed throw hood design securely clamps axles from 12 mm to 20 mm in diameter and 9 mm quick release hubs with included adapter easier bike loading thanks to expanding wide jaw clamp that accommodates a bikes thru axle with no loose parts axle clamp is not dependent on dropout width so boost and other less common front axles are no problem erg