Inline tube BLK250 & BLK247 69-70 Mopar B-body Charger, Coronet, Roadrunner, GTX Disc Brake Valve set up for disc brake cars 2 piece set, B-Body Disc Brake front hold off valve, distribution block with built in rear hold off valve for disc brake cars) This kit includes both valves to put the correct valving on your disc brake car. All cars had the distribution block and this second block was only on factory disc brake cars. The originals are impossible to find in any condition and sell for hundreds of dollars right hear on ebay. Now you do not have to chance it with a used, rusted, wornout parts. This is a brand new Inline Tube reproduction that is exact to the factory orginal in.