Durability of rubber with extra strength of double reinforced construction. 10-sided all rubber extra heavy cover resists wear, abrasion and weather. Stays flexible year round even at sub-zero temperatures. Full flow heavy-duty octagon shaped solid brass couplings are crush-resistant. Our toughest hose combines high burst, maximum flexibility and extra heavy construction. 5/8'' diameter. Black. 1R grade. Lifetime warranty. No. 06866: 25' No. 06868: 50'