MSD Ignition Cap-A-Dapt Cap And Rotor Features: Adapts A Large Style Cap Onto Your MSD Distributor Spark Plug Terminals Spaced Farther Apart Prevents Crossfire Will Not Vibrate Loose Incredible Strength/Resistance Thicker Vanes To Prevent Ionization Fixed Rotor Tip Brass Terminals/Rotor/Cap Height: 3.00 Width: 6.00 Length: 6.00 Weight: 1.30 lbs Vehicle Type: Distributor Cap and Rotor