Lixada pulley is a professional equipment for climbing, rescue, aloft work, engineering, caving, etc. Features: Use rope with 13mm diameter (max). Use cable with 12mm diameter (max). Made of aluminum and magnesium alloy shell and stainless steel pulley. Feature efficient bearings for high-speed adventure. For climbing, rescue, aloft work, engineering, caving, etc. Tensile strength 30kN. Specifications: Brand: Lixada Color: Burgundy / Blue / Gold (optional) Material: Aluminum and magnesium alloy, stainless steel Use rope: 13mm (max diameter) Use cable: 12mm (max diameter) Strength: 30kN Dimension: 10.8 * 7.8 * 3.6cm / 4.3 * 3.1 * 1.4in Weight: 284g / 10oz Package List: 1 * Pulley?WIDE APPLICATION?This stainless steel zipline pulley can be used for backyard zipline/swing seat/baby trampoline/setup, dog running leash, lift, rescue, bungee jumping, downhill, aerial work or other outdoor adventure activities. ?ROPE FRIENDLY?This rescue pulley is specially designed for ropes and cables; Max rope diameter: 13mm/0.5in; Max cable diameter: 12mm/0.36 inches. High strength torsion resistance, prolong rope life. This twin cart is lightweight and durable enough for your outdoor adventures. ?EXCELLENT PERFORMANCE?The maximum breaking strength of this rescue pulley is 30KN/6700LBS, it can keep you safe in most outdoor applications, such as rescue, swing seat or backyard zipline setup, etc. Weighs only 248g/0.55 lbs. Lightweight and easy to carry, it's a perfect tree climbing gear for you!. ?SMOOTH BEARING?Made of aluminum-magnesium alloy material and forging process, it has good oxidation resistance and durability. Features dual 361 stainless steel polished bearings for excellent smooth rotation. Its top speed can reach 35 m/s. This tandem pulley works better than a single pulley. ?SAFETY AND EFFICIENCY?This zipline trolley adopts a unique heart-shaped design, with double pulley blocks in series, providing smoother rotation, stainless steel ball bearings, with self-lubricating bushings, no friction blocking, with high safety and stability.Date First Available: December 14, 2021. Best Sellers Rank: #46,717 in Sports & Outdoors. Customer Reviews: 4.4 out of 5 stars 134 ratings 4.4 out of 5 stars. : B09NM2PW4K. Part Number: ?Lixada. Manufacturer: ?Lixada. Suggested Users: ?unisex-adult. Material: ?Stainless Steel. Color: ?Grey. Brand Name: ?Lixada. Package Weight: ?0.28 Kilograms. Item Package Dimensions L x W x H: ?6.81 x 6.14 x 2.05 inches.