The favorite high end wheel for speedskaters. Set with 8 wheels
The Matter wheels from USA is using the Footprint notation. F1 is footprint 1, F2 is footprint 2.
Lower footprint = harder wheel.
Models:
F1track - equals 87A (blue)
Blue was specifically formulated for cement and asphalt surfaces that demand grip but also roll.
Extra hard compound that provide also grip, great also to mix with other matter wheels. Blue wheels can be found mainly on position 2 and 3 in most setups.
One of the favorite wheels of Alexis Contin.
Recommended surfaces: cement and asphalt tracks which demand grip and roll, also great to mix on road for roll.