Shimano Deore XT SM-RT86 6-Bolt Disc Rotors features ICE cooling technology and a mud shredding rotor blade design to keep the rotor cooler and cleaner.ICE technology features a 3-layer structure with aluminum core and two stainless steel outer layers to reduce rotor surface temperature approximately 100 degrees Celsius compared to all-steel rotorsLight weight heat resistant design for less fade less noise and longer pad lifeMud shedding rotor blade design helps to keep the rotor cleaanerIncludes rotor fixing bolts and non-turn washers SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Size 203Mm