This is a brand new 7" CHROME dual diaphragm brake booster with all CHROME, Center-Milled master cylinder.  This 7" Dual diaphragm booster offers 19% better stopping power over the single 7" booster, and 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 Center Ball Milled style, and features a 1" bore and the ports measure 9/16" and 1/2".  This master cylinder will work with any drum/drum, disc/drum, or disc/disc setup.  Our kit will really improve the looks and performance of your street rod project.