Sterling Flex Eye to Eye Prusik, 10mm Sewn

The Sterling Flex eye to eye prusik is a 10 mm hitch cord with sewn terminations, ready to tie your friction hitch out of the bag. Sewn eyes are compact and low-profile, which leaves more cord for the hitch itself.

Why sewn eye-to-eyes

An eye-to-eye is the heart of a traditional MRS climbing system: tie a Distel, VT or similar hitch on your climbing line, clip both eyes into a carabiner, and add a micro pulley to tend slack. Sewn eyes are smaller than spliced or knotted ends, so the hitch sits closer to the carabiner and you can use a shorter, more responsive cord.

Sterling's Flex cord is designed to grip and release smoothly. A 10 mm cord is commonly used on lines around 11 to 13 mm, but grip depends on rope construction, so test on your own line. Browse more eye-and-eye prusiks to compare.

Length matters too: a cord that is too short will not leave enough tails for a proper hitch, and one that is too long makes slack tending clumsy. Check the listed length against the hitch you tie.

Testing and inspection

Tie and dress the hitch close to the ground, load it, and confirm it grabs and releases before you climb. Adjust wraps or switch hitches if it slips or locks up.

Hitch cord is a wear item. Replace it when the cover is glazed, fuzzy or stiff, when the core shows, or when the stitching looks worn. Life-support gear must meet the applicable standard, be used per ANSI Z133 and the manufacturer's instructions, and be inspected before every climb by a trained user.

Keep a spare in your gear bag so a worn hitch never becomes a reason to keep climbing on it.