X tools torx star key x 9 setthe x tools torx star key set comprises of 9 keys ranging from t10 t50 with the increasing popularity of torx head bolts in the mtb industry these days every tool box should contain at least one set of these keys features included sizes t10 t15 t20 t25 t27 t30 t40 t45 t50 9 key setbuyx tools tool sets from chain reaction cycles the worlds largest online bike store