MSD Ignition Pro-Cap Distributor Cap And Rotor Features: Largest Cap Available For Improved Spark Isolation 5 in. Diameter; Terminal To Terminal Injection Molded From Strong DuPont Rynite No Chance Of Spark Scatter Plug Wire Retainer Included Brass Terminals And Screwed Down Rotor Tip Installs To Most MSD Pro-Billet Distributors Ideal For High Boost And Nitrous Injected Engines Height: 6.00 Width: 7.00 Length: 7.00 Weight: 1.90 lbs