gorilla 39Diameter: 39.00 mm; Thickness: 11.00 mm; With crown guards: 43.10 mm; Lug to lug: 50 mm; Water resistance: 100M330FT10ATM; Scratch resistant sapphire, double anti-reflectiveExample: Gorilla® by Continental ContiTech 1 (25 .4 mm) 500 psi Made in USA Flame Resistant USMSHA No . 2G-IC-14C39 Couplings Refer to the ContiTech Industrial Hose Assembly