ISC ROPE WRENCH RP283 13MM WITH DOUBLE TETHERISC Rope Wrench RP283 13mm with double tether NEW! And optimized for SRS SRT climbing on 13mm 1 2 lines. Ever use a wrench on your 1 2" line and feel it just struggle a bit. Not no more smooth as silk. This wrench was designed for 13mm lines and you'll appreciate and love it, especially maneuvering on SRS limb walks. FEATURES Designed to be optimized for 1 2 (13mm) lines Smooth and efficient for larger diameter lines Great for companies who mandate