Dt swiss 240s radial front hub the 240s is the signature dt swiss hub available in many different versions from bolt on single speed to 20mm thru axle this line has been and will continue to be the standard in low weight and high quality for years to come features dt swiss ratchet system no tools needed for routine maintenance stainless cartridge bearings centre lock licensed by shimano inc buydt swiss wheels tyresfrom chain reaction cycles the worlds largest online bike store