Fibre-Metal Roughneck P2 Caps With Supereight Ratchet Suspensions Are The Industry Standard For Heavy-Duty Protection. These Injection-Molded Fiberglass Caps Are Built For Strength, Toughness, Durability, And Exceptional Impact And Crack Resistance Surpassing Many Performance Tests. All Caps Meet Ansi-Z89.1-2009, Type 1, Class G. Impact Resistance Tests At Extreme Temperatures Of Up To 500 F.,