Mallory 8479005 84 Series Billet Competition Distributor Features: CNC-Machined 6061-T6 Aluminum Billet Housing Shafts Are Centerless-Ground And Burnished Sealed Ball Bearing On Top Of The Shaft Adjustable Racing Advance Curve Easy To Replace Aluminum/Bronze Gear Adjustable Flange Magnetic Single Pickup Height: 16.50 Width: 9.75 Length: 6.75 Weight: 5.00 lbs