This is a really nice, brand new, never installed 1 1/8th" Bore dual outlet OEM Corvette/GM style Master Cylinder by MBM Brakes, part #MC2912ACH. It's all aluminum with a chrome finish. It's a very universal master cylinder. Can be used with manual or power brakes. 9/16" & 1/2" Ports on left Side. Great for hot rod, 4x4 or muscle car applications. Asking $50. Shipping is possible.