Tuff Stuff 2121NB-1 Single Diaphragm Booster Combo, Master Zinc

Specific fit applications available in beautiful chrome plated, zinc or black powder coated finishes. 1" and 1-1/8" master cylinder bores work with disc/disc, disc/drum, and drum/drum brake set-ups. Single and dual diaphragm styles available in 7", 8", 9" and 11" diameters to fit virtually all hot rods, customs and muscle cars. 100% all new components - and every unit is vacuum tested to insure reliability. Works with many stock mounting brackets and Tuff Stuff universal brackets.