The park tool 15mm hex wrench is l shaped to fit shimanoreg rear thru axle freehubs park tool 15mm hex wrench features the hr 15 is an l shaped 15 mm hex wrench for removing the freehub body from shimanoreg rear thru axle hubs the short shaft of the wrench is 40 mm and the long shaft is 275 mm for leverage the hr 15 is made from industrial quality steel with chamfered tips for a clean fit made in the usa and covered by park tool39s legendary limited l