ISC Aluminum Oval Carabiner

The ISC aluminum oval carabiner is a symmetric locking connector that keeps pulleys and devices centered. It is a light, versatile carabiner for climbers who build haul systems, carry spare hardware or need an even-loading connector.

Why ovals are useful

An oval spreads load evenly between both sides, so pulleys and rope grabs stay centered instead of sliding toward the gate. That makes the ISC oval a solid pick for mechanical advantage setups, racking several pieces of hardware, or pairing with a micro pulley on a climbing system.

Ovals are also common in rescue kits, where pulleys and rope grabs need to stay centered for a haul system to work well. If your crew keeps an aerial rescue kit, a few matching ovals make it quicker to build a system under pressure.

Ovals are generally not as strong as a D of the same weight. Check the spine markings and compare with our other auto-locking carabiners.

Inspection

Check the gate action and lock each time you clip it, and look for grooves where rope runs. Rinse off grit and sap and dry it before storage.

Treat it as life-support gear: follow the manufacturer's instructions, check it before every climb, and retire it after a hard fall, a drop onto a hard surface, or any damage you can't explain. Use it within an ANSI Z133 program and only after proper training.

Store your ovals clean and dry with the rest of your hardware. If you mix them with rigging gear, mark the climbing ones so they never end up on a lowering line.