MagiDeal Rock Climbing Rope Grab Tree Climb Adjuster Arborist Gear Kit For 11-13mm Rope Material: aluminum magnesium alloy Main color: blue, silver Dimensions: approx. 8.5 x 7 cm / 3.35 x 2.76 inch Suitable for 11mm-13mm Rope Great for outdoor climbing, mountaineering, rock climbing etc