Distribution block is machined with a -6 ORB port in the front and six -3 ORB ports on the side to plumb fuel lines into and mounting pad is set up with two 10/24" bolt holes on a 1.550" spread. Machined from a solid chunk of aluminum to keep it lightweight and anodized for corrosion protection. Distribution block dimensions are 2.550" x 1.00" x .785" and weights next to nothing compared to an eight port block.