1 1/8" BORE TANDEM MASTER CYLINDER WITHOUT THE PUSH RODLIGHTWEIGHT ALUMINUM CYLINDER WITH A BRIGHT POLISHED FINISH THAT GIVES IT THAT SHOW CAR LOOK THAT IS GUARANTEED TO CATCH THE EYE OF THE MOST DISCRIMINATING ENTHUSIASTSTHE CUSTOM LOOK IS ALSO ADDED TO BY THE SLEEK FLAT TOP LID1 1/8" STAINLESS STEEL SLEEVED BORESLOTTED 2 BOLT MOUNTING FLANGE ACCEPTS 3/8" & 10MM BOLTS, AND ALLOWS FOR MOUNTING TO 3 1/8", 3 1/4", AND 3 3/8" CENTER-TO-CENTER PATTERNSTHIS MAKES IT A SIMPLE BOLT-ON TO MANY OE MOUNTS INCLUDING THE POPULAR CHRYSLER, CORVETTE, GM, & FORD MUSTANG BOLT PATTERNSHEIGHT FROM CENTER LINE TO THE TOP MOST POINT ON THE RETAINING BAR IS 3 1/2"MEASURES 8 3/4" FROM MOUNT SURFACE TO FRONT OF CYLINDER BODYFEATURES 1/2" AND 9/16" PORTS ON EACH SIDEINCLUDES PLUGS FOR THE SIDE THAT IS NOT USEDFEATURES A DEEP PISTON DESIGN & INCLUDES A PISTON ADAPTER THAT ALLOWS IT TO BE USED FOR MANUAL & POWER APPLICATIONS