The FLT-3 combines the metal axle spacers of the FLT-1 with the unmatched grinding feel, light weight and strength of the FLT-2 frame. Even with the axle bolts tightened all the way the wheels are still spinning freely and everyone on our team was blown away what a difference it makes and how much faster these frames are.

All UFS system frames fit on all UFS system skate boots. No matter the sizing. The distance between the mounting bolts is always the same

The size of the frame does only vary in length.
Size S = 245mm from front to back axle, usually meant for shoe sizes below eu40

Size M = 255mm from front to back axle, usually meant for shoe sizes between eu41 and eu42

Size L = 268mm from front to back axle, usually meant for shoe sizes above eu43

Ground Control is an American brand best known for their Frames, but they also produce wheels and soft goods, Their riders are pro skaters like Martin Danning, Josh Glowicki, Nils Jansons.

More information about ground control can be found here:
https://www.gc-uprising.com

The frame is the bottom of a skate that holds the wheels. It is mounted to the boots with 2 or 3 bolts. There are a couple of different mounting types, Learn more about the ways to mount your frames here:
https://thisissoul.com/frame-mounting