Truck size
5.0"Hanger-(129mm) -7.75" Axle - 7.25”  to 8"    deck width
5.5"Hanger-(139mm) -8.0"   Axle - 8”        to 8.5" deck width
6.5"Hanger-(169mm) -9.0"   Axle - 8.5”     to 10”  deck width