For clamping flexible brake lines, fuel lines, vacuum hose and other fluid lines. Allows servicing to be carried out without the need for system draining. Heavy-duty serrated jaw edges provide excellent clamping whilst avoiding damage to hoses. Jaws pivot and self-level to ensure parallel clamping. Fine-adjusting ratchet action allows hoses to be fully or partly closed. Cocking mechanism holds pivot jaws firmly in position. All steel construction with corrosion-resistant finish.