Street Tech Formula® powers the legendary BONES STF wheels that roll fast, grip when you need to and slide when you want to, without flat spotting
STF wheels outperform all other wheels, and because they wear so well, they last several times longer than normal wheels, making STF wheels the best for less
Hard 99A durometer
V5 Sidecut Shape = sidecut walls designed for more stability, less drag & longer grinds (plus the picture doesn't wear off as quick)