Product Description Item Number | 10077718 MSA SureGrab™ Trailing Stainless Steel Rope Grab with Sure-Stop™ Lanyard Features: Rope grab - fall arrester Automatic or manual 21.5" Shock Absorbing Lanyard Open body Sure Grab works with -Lifelines-5/8 Inch.(order lifeline separately) Can be installed or removed from the lifeline at any point along length. One Sure-Grab per box Meets and exceeds ANSI Z359.1 and OSHA standards and is CSA certifiedCertified to EN 353-2, USA Approvals: MSA - IAC032-CAL_r0; Canadian Approvals CSA - 2012-12-12_2550583Information on Sure-Grab™ Rope Grab:Designed to be used to provide temporary fall protection on ladders or when climbing vertical surfaces. Can also be used to provide a secondary lifeline for suspended positioning systems used by building/structure inspectors, window cleaners, and maintenance personnel. The Sure-Grab device moves freely up or down an approved 5/8" dia. (16mm) lifeline. When sudden downward movement occurs, a camming lever is activated arresting the fall.