This is the ankle strap that fits on all FRx, FR1, FR2 and FR3 skates. It comes in 4 different sizes, but the sizes only indicate the length. So any size strap is able to be mounted on any size skate.

The set includes both left and right

Lengths for the ankle buckles is from the bolt to the bolt. Because they can extend both the shortest and the longest length are mentioned.
XS = 16cm – 24cm
L = 21cm – 32cm
XL = 24cm – 32cm

ANKLE BUCKLES
These type of buckles or straps all have only one hole on both sides. They only vary in length. As long as the length will work, you can use any brand buckle on any brand boot.

Buckles that are mounted like this are called SBM2 which stands forStandardBuckleMountwith a total of2bolts.