The Tech 3 Duo Master brake is aimed at people who want to operate 2 one-handed tweezers individually.The master brake is combined with our X2 or E4 calipers that fit any XC to Enduro/All mountain ride.The design is derived from the proven Tech 3 master cylinder and with the fingertips and bite point settings on each lever, you can be sure that the levers will feel comfortable and adapt to your riding style.The Tech 3 Duo Master differs from our One system, as there is total independence between the front and rear tweezers.Duo lever compatible with X2, E4 and V4 tweezers.The Tech 3 lever offers a genuine bite point and tool-free CNC tool-free range adjustment machined from aluminum alloy T6 2014 Mounting wide-angle hose connector Anodized top inlet accessory for greater CNC durability machined from T6 2014 aluminum alloy Compatible with a wide range of r..