what it does is creates a stress-point prevention because x squared times 2 divided by 1000 times 3.14=circumfrence....haha idk just wrote random stuff
but what it does is prevents your cores from cracking...how? when you glue the wheels you hotglue the gaps in the core (if you have spokes). By doing this the glue fills up the space in which the spokes would normally buckle (direcction they snap). So they can no longer move, thus they can no longer snap/crack...
in short it makes the wheels last way longer...and they will not break unless you break the urethane