DT Swiss's patented RWS wheel mounting system is rigid, safe and easy to use. The Plug In version offers all the advantages of tool-free mounting of the thru axle, if you wish. If you prefer the clean look of a screw axle, simply pull off the lever unit and stow it in the backpack. Or leave them right at home. On the axle there is a 5 mm hexagon which can be operated with any standard tool. On the lever unit there is also a 5 mm hexagon which can of course also be used as a mini tool on the road. Clean and smart: The RWS Plug In.