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 run leash, lift, rescue, bungee jumping, downhill, aerial work or other outdoor adventure activities. ?CABLE DIAMETER?This rescue pulley is specially designed for ropes and cables; Maximum rope diameter: 13mm/0.5in; Maximum cable diameter: 12mm/0.36in. This twin cart is extremely lightweight and durable enough for your outdoor adventures. ?STRONG BREAKING STRENGTH?This rescue pulley has a maximum breaking strength of 30KN 6700LBS, so it can keep you safe in most outdoor applications, such as rescues, swing seats or backyard zipline settings, etc. ?SMOOTH BEARINGS?This ball bearing pulley has dual 361 stainless steel polished bearings for excellent smooth rotation. Its maximum speed can reach 35 m/s. This tandem pulley works better than a single pulley. ?SAFE ALUMINUM ALLOY?This zipline trolley is made of hot-forged aluminum-magnesium alloy housing and stainless steel ball bearings, which has high safety and stability.Date First Available: October 31, 2016. Best Sellers Rank: #193,130 in Sports & Outdoors. Customer Reviews: 4.7 out of 5 stars 198 ratings 4.7 out of 5 stars. : B01M2BMQ9S. Part Number: ?43234-1998. Manufacturer: ?Lixada. Suggested Users: ?unisex-adult. Material: ?Stainless Steel. Color: ?Dark Blue. Brand Name: ?Lixada. Item Weight: ?0.3 Kilograms. Package Weight: ?0.29 Kilograms. Item Package Dimensions L x W x H: ?6.42 x 4.92 x 1.77 inches.