Product details:

Tuff Stuff Performance 2121NB-1: Master Cylinder Booster Combo, Natural/Zinc, 1.00 in. Bore, 7.0 in. Diameter Booster, Kit - Tuff Stuff Performance brake booster and master cylinder combos are top-of-the-class high performance pieces that are not only attractive, but also reliable to help get you home safely. They come available in natural and triple chrome plate finishes, making your hot rod look good under the hood. Tuff Stuff Performance brake booster and master cylinder combos are assembled, plated, and then polished in-house by Tuff Stuff.