12pc Set.1979-81 GM F-body - Front Disc / Rear Drum 3 hose set. This is for cars with front disc brake, single piston calipers. The banjo bolt size is 10MM. Front Disc Brake & Rear Hoses with correct Zinc Ends. #BH36845 Front & BH36767 Rear, 3 hose clips, banjo bolts, crush washers. These are exact to factory original in every detail except they have a current date code required by law. They are the correct length, with the correct size ends with the correct stop ring the frame ends. These hoses also feature bright dot lettering just like the originals. These hoses run from the frame to the caliper, to transfer fluid from the hardline to the caliper. They up and down with suspension travel. This may also be used when converting to disc brakes. These are usually dry rotted ,cracked and unsafe.