The Omega Pacific 7/16 Steel Modified D Screw-Lok Carabiner with Captive Eye is a great handling carabiner for general use. Heat treated and plated to increase corrosion resistance, this carabiner is a must for every rescue kit. The captive-eye is great as a component to slings, harnesses and kits when you don't want the carabiner to become detached. Captive eye Modified D's are great for OEM projects and industrial uses (each captive-eye comes with the pin uninstalled, ready for your use).