hydraulic brake system. Includes universal caliper adapter BR-M535 fits IS-51mm & PM-74mm, Brake lever BL- M535, Hose SM-BH59 1700mm, Cable supporter, mounting bolts, bleed kit, mineral oil & Resin Brake pad unit M07-S. The Deore M535 disc brake features a unique price/performance ratio combined with easy installation and adjustment. This is the ideal brake for universal use on mountain bikes. 2 opposed Piston Design ( The disc brake caliper uses a compact opposed piston design that helps absorb rotor vibrations for smooth and powerful braking). Strong Stopping Power with Precision Control. Caliper Material: aluminium. Lever material: alumiun anodized. Bracket material: aluminium painted. Cuttable resin brake hose.