Parameter: Product Name: Spring Balancer Load range: 15-22KG /22-30KG Working stroke: 1.6M Wire rope diameter: 5MM Wire rope length: 1.5M Shell material: Aluminum Tower wheel material: Aluminum Weight: 7.13KG Features: 1. Thickened alloy cover, anti-wear and durable 2. High precision aluminum alloy tower wheel 3. Alloy steel hook 4. Locked safety buckle 5. Anti-collision buffer design 6. Adjusting bolt design 7. Self-locking device design Note: Load 1-200KG can be customized, if you need other load ranges, please contact customer service. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!