Floating hoofboots:
12 mm diameter, flexible (attach neoprene to the front).
Floating & Explora hoofboots:
16 mm diameter, firm (attach neoprene to the back; heelprotection).
EVO hoofboots:
12 mm diameter, flexible (attach neoprene to the back, heelprotection, but this pin has a slightly larger distance to the ball on the rod than the 12 mm for the Floating).
