ISC HMS Carabiner

This is the largest aluminum HMS carabiner in the ISC lineup. Its oversized frame provides extra room for complex rigging setups and multiple knots, making it more versatile than compact alternatives.

The Supersafe mechanism is a triple-action gate that requires three distinct movements—slide, twist, and pull—to open. It is designed to prevent accidental opening, offering a higher level of security for critical rigging tasks.

Yes, with a 22 mm gate opening, it accommodates thicker ropes and multiple hitches easily. The large internal volume ensures that ropes move smoothly without binding.

Beyond the grey aesthetic, the anodized finish creates a harder, more durable surface layer. This helps protect the aluminum from corrosion and minor abrasions, extending the lifespan of the carabiner.

While it is on the heavier side compared to ultralight sport climbing gear, this weight reflects its robust construction and high 27 kN breaking strength. It is best suited for rigging, rescue, or work-at-height applications where durability is prioritized over shaving every gram.