High power 4 piston deore m6120 brake calliper providing efficient braking with a minimalist designfor use with mineral oil which is non-corrosive and less hazardous than conventional hydraulic fluidthe one way internal fluid circuit makes bleeding easy, while great piston retraction increases pad to rotor clearanceshim-less mounting bracket allows for quick installation and set upcompatible with international standard and post mount forksto be used in conjunction with Shimano hydraulic brake leverscan be used with ice tech pads available in resin or sintered compound, the optional aluminum radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg ccomes as standard with d03s resin pads