Robart 139SET Disc Brake Set 

Pneumatic Disc Brake Set for 5" - 6" Brake Ready Aluminum Wheels w/Air System & Electronic Brake Valve (set)

Sets include: 2 Disc Brakes, Electronic Brake Valve, 10 ft. Black Air Line, Fill Valve & Chuck, 2 T’s, and Small Air Tank

(NOTE: These Brakes Will Not Work With The Scale P-51, 6 Spoke & Spitfire Hubs)