This climbing rope grab is designed for use in self belaying on 11-13mm fixed rope. Built for simple yet reliable operation and positioning. Rope-friendly ribbed cams create solid and firm bite while protect your rope from wear. It is widely used as a helpful compact device in many applications, like industrial height safety, rope access, arborist climbing, flipline adjuster and etc. Specifications: Brand: Material: Aluminum Magnesium Alloy Color: Blue Rope Diameter: 11-13mm / 2/5-1/2in Item Weight: 181g / 6.40oz Item Size: 8.5 * 7.5cm / 3.34 * 2.95in Package Weight: 184g / 6.47oz Package Size: 10.2 * 6.5 * 6.1cm / 4 * 2.6 * 2.4in Package List: 1 * Rope Grab