AP02 For 7 Chrome Street Rod Rat Rod Power Brake Booster w/ Bail Top Master Cylinder This is a New 7" Chrome Street Rod, Hot Rod Power Brake Booster & Master Cylinder. Features:* 7" Chrome brake booster with Bail Top Master Cylinder.*This 7"CHROMEbooster is ideal for most small to mid size street rods and customs.*The booster mounts with a 4-bolt pattern.*The 4 bolts are in a perfect square and are 3 3/8" apart (center to center).*The master cylinder in this kit is the Chrome Bail Top style and features a 1" bore.*This master has ports on both sides (9/16" and 1/2") and includes plugs to block the unused ports.*This master cylinder will work with any drum/drum, disc/drum, or disc/disc setup. Package Includes:*Brake Bail Top Master Cylinder with 1" Bore the ports measure 9/16" and 1/2" Zinc*7" Chrome Booster