Climbing Hand Ascender, Climbing Gear Right Hand for Rock Climbing Arborist Tree Climbing Rigging Why Oumers: Oumers INC. mainly engaged in the development and export of outdoor products. Products of high quality, stylish design. Oumers has always adhered to ” High quality products, good customer experience” business purposes. Committed to providing you with high-quality products and quality services. Material: Aluminum Alloy Color: Blue/Black (Right Hand) Rope compatibility: 8~12mm Weight: 238g / 8.39oz Certification(s): CE1019 EN567 An hand ascender is known as a device use for ascending a rope in a vertical single rope climbing, like rock climbing, tree climbing… Cams installed inside helps slide up a rope easily but clamp when pulled in the opposite direction. A gear indispensable for vertical Single rope activities. The ergonomic thermo-molded handle and ample inner space provide excellent comfort and aids grip to keep from fatiguing even in a long time single rope climbing. The cam is easy to engage with the thumb .One Slot on either upside and downside where carabiner could be used to connect the rope. Warm Prompt: If you receive the item with any problems, please contact us at the first time, you will get the best after-service. We will do our best to help until this is fully resolved. Have a good time!