Material: 7075 Aircraft-grade Aluminum alloy Hot Forged Standard Finish: Anodized Breaking Strength: 40kN / 8800lb Dimension: 170x170mm / 6.7x6.7in Thickness: 15mm / 0.6in Weight: 282g / 9.95Oz Working Principle Efficiently apply large friction to rope (climbing line, rigging line, etc.) and help control rope sliding speed. Compared to Standard 8 A pair of extra Bent-Ears are added to Rescue 8, which makes it a much safer and more versatile device. The ears prevent rope sliding up and locking up, which is the general cause of accidents when rappelling with a standard 8. Adjustable Descent Speed due to Big Slot The main slot is big enough for operator to double or triple the single rope to increase frictions. Hence, operator is able to slow or stop descent with minimum force. Look up yourself with long bent ears If you need to stop rappelling to do other operations, just make 2~4 loops around the ears and lock up yourself. Pay attention to that the loops must be kept under and within bent ears. Efficient control of descent rate Rescue 8 is widely used as descent control device in SRT in mountaineering, rappelling, adventure, training, tree climbing, caving, etc. For Set-up of Aerial Silk Dance Due to its long bent ear and sturdy construction, Rescue 8 is also widely used in rigging an aerial silk. Thick body makes it friendly for both textile rope and aerial silk strap.