noooo dont get the SZ clamp get the SCS, its a compression system, u should be familiar with it cuz ur a bmxer so i wont explain lol, but yea SCS is the best (brass knuckles)
the half knuckel isnt a compression system, its just a clamp, if u got the half knuckle u need to get a seperate HIC, or ICS...i wish they were in stock in SR though....im gonna be ordering mine from weescooters...