Thule Thru-Ride Fork MT 535 One-handed throw-hood design fits 12mm to 20 mm thru-axles and 9mm quick release hubs (with included adapter). Expanding wide-jaw clamp accommodates a bike's thru-axle with no loose parts for easier bike loading. Ergonomic precision dial ensures a secure grip by optimizing clamping pressure on thru-axles. One-key lock cylinder (sold separately) locks the bike to the carrier and the carrier to the rack (thru-axles only) Fits Thule rack systems, round bars and most factory racks with both T-track and around the bar tool-free mounting. Available Accessories (Sold Separately): Thule ThruRide 9mm Adapter.