Features: This ring is forged with high strength metal material, unbreakable and wearable, and to use. Using the friction between the rope and the fall speed or the brake, can help you climb safely. 35KN heavy duty, suitable for most people to use. Big holes is the main load-bearing, the small hole is the connector between rope and safety belt. Used for rappel system, also suitable for fire , working aloft, etc. Specification: Material: Aluminum Alloy Color Options: Blue; Black; Gold; Grey; Red; Orange Maximum Breaking Strength: 35KN (3500kg) Suitable for Hole Diameter: 8-13mm / 0.3-0.5inch Hole Diameter(Inside): Approx. Small-2.6cm / 1inch; Large-5cm / 2inch Size: Approx. 14.5*7.5*1.2cm / 5.7*2.9*0.5inch Weight: Approx. 124g Package List: 1 * Climbing Rappel 8 Ring