Cobra® water pump pliers, polished head Design: DIN ISO 8976. Made of chromium-vanadium electric steel, hardened and tempered in oil, polished head, grip zones with specially hardened teeth (61 HRC). Fast and precise setting using the button, can be adjusted using one hand. The pushed-through slip joint allows for a high degree of stability as a result of the double bearing. The safety guard prevents fingers from being crushed. Self-clamping to pipes and nuts. Plastic-coated handles.