Four 18mm diameter pistons provide unimaginable power and outstanding modulation- Large reservoir with multiple bleed ports for worry free bleeding- Uses Formula's mineral oil that has a higher boiling point and lower freezing point than other mineral oils- Includes 1750mm hose length- Weight listed includes 85mm length hose and 160mm rotor with hardware- Optional Speed Lock technology greatly facilitates installation of the brakes on frames that have internally routed housing, USE FA-7149 and FA-7087