Shimano slx zee deore rt66 6 bolt disc rotorshimano introduces zee a new line of gravity components that are an ideal starting point for aggressive riders and racers zee is the gateway gravity component line that allows riders to get on board with shimanos gravity program and experience premium new component technologies at a price they can afford features fit 6 bolt international standard mounting system material stainless steela 2 year warranty is offered with all shimano products from ch