MK gate is 2"x2" square section with diamond plate pads. These are due to be changed to shark tooth as they give more grip and less air resistance.
It is made in 3 sections the centre is 2 lanes and the other sections are obviously 3 each. each section has 2 lugs that locate it to the start hill and its bolted together with 6 m16 bolts. the longer sections are 3.2m any bigger makes it hard to find a van that they will fit in.
I have set this gate up about 200 times so know it intimately, feel free to ask me further questions.