The stopping power and safety of Disc Brakes in a bolt-on kit! Converting your 1966 Thru 1977 VW Bug Or Ghia from Drum to Disc Brakes is made simple with this conversion kit. Includes: Disc Brake Rotors With 5 X 130mm Porsche & 5 X 4-3/4" Chevy Lug Bolt Pattern (Porsche 14mm Threads / Chevy 12mm Threads) Disc Brake Calipers with Pads Backing Plates Fits 1966-1977 Standard Beetles 5/130 or 5/4.75 Lug Pattern . Designed for Beam in A Box P/N 22-3110-0 and 22-3114-0