Description Ideal Tridon Worm Gear Hose Clamp, Series: Hy-Gear 67-6, 1/2 - 1-1/16 in Nominal Opening, NO 10 Trade, 1/2 in Width, 5/16 in Hex Bolt, 35 in-lb Torque, Grade: 316, Stainless Steel Band, 316 Stainless Steel Bolt, For Marine? and Salt Water.