The FIXE Chain Anchor was developed at the request of many customers. The unit is designed to be used in pairs or with another Top Anchor unit. The chain is rated and tested as an industrial product. When used with a Ring or Double Ring Anchor, an excellent Top Anchor is created. It is possible to extend the anchor point over obstructions using this anchor. A pair of Chain Anchors makes an affordable system that will last. In climbing gyms, these work exceptionally well as Top Anchors. This replaces old webbing and slings for quality control at the anchor. Specs: a 6750lbs 30kn CEUIAA Certified a 9,000lbs 40kn Ultimate Breaking Strength a 38 10mm Bolt Hole standard a 12 13mm Bolt Hole a 4mm stock hanger a 10mm stock ring a 304 Stainless Steel Note that this item of climbing safety equipment is non returnable. Please call us toll free at 877 236 8428 or e mail bentgatebentgate.com with any questions.