The Shimano XT FH-M756 Disc Freehub is a reliable long lasting disc compatible rear hub with a standard six bolt fitting for disc brake rotors, perfect for Shimano Deore hydraulic disc brake system. Shimano XT FH-M756 Disc Freehub Features Double contact sealing shuts out mud and water from bearings to extend their service life and maintain smooth operation in all environments Low-friction Borozon treatment bearing races for a precision rolling action Light alloy quick release included 9 mm chrome-moly steel axle Anodised aluminium hub shell Available in 32 and 36 hole drillings Average weight 244 grams (without Q/R)