Micro Stoppers (Previously called "Swedges") are made by shooting powdered iron into a die, then adding melted copper. The copper fills the gaps between the iron. This combination makes Micro Stoppers less prone to shear than most micro nuts. Bottom line: strong micro protection that stays put. Essential tool for ultrathin cracks. Individually tested and 3 Sigma rated.
Note that this item of climbing safety equipment is non-returnable. Please call us toll free at 877-236-8428 or e-mail firstname.lastname@example.org with any questions.