Referred to by the manufacturer as their "Power Seal" clamps, these clamps are a dependable choice for most above- and below-the-waterline clamping applications. With "Quadra-Lock" interlocking construction, these clamps hold securely and won't back off. All-stainless steel construction assures corrosion resistance. Clamps exceed all SAE requirements and comply with ABYC requirements for onboard clamping applications. Sold individually.