Replacement rectangular master cylinder for cnc, neal or latest rage pedals. 5/8 inches bore. Fitting size is 1/8 inches npt and does require an adapter to connect the line.
Rectangular master cylinders are what is needed for a 4 wheel brake system. They will also work for 2 wheel.
Mounting holes are 2-1/4 inches on center in a 12 to 6 configuration