Double bolt hose clamp Two Bolts: It uses two bolts (or screws) to apply even pressure across the clamp, ensuring a tight, uniform seal around the hose. Wide Band: Typically wider than standard clamps, distributing clamping force more evenly and reducing hose damage. Material: Usually made from galvanized steel, stainless steel, or other corrosion-resistant materials for durability. Bridge Section: The clamp has a bridge that spans the hose ends, making it especially effective on spiral wire-reinforced hoses.