Hyper Diamond is Gateway’s grippy premium plastic: a more opaque, tackier version of the Diamond formula. It’s a line in its own right, not a firmness grade of Diamond.
That makes it the Gateway plastic for wet and cold rounds, the way Star relates to Champion at Innova. One mould is listed in it on this site, and one more under the HD abbreviation.
It’s a step below Diamond on lifespan. Buy Diamond to keep a mould’s flight, Hyper Diamond to hold onto it.
