Usage Tips:Description: Feature: This product is a hydraulic cylinder accessory, which can be used as a damper, buffer, and shock absorber for rowing machines. Premium Material: Made of iron, this steering stabilizer is sturdy and resistant to wear and corrosion, ensuring long term use. Compact Size: With a length of 35.5cm/13.98inch, this damper stabilizer holder is compact in size but powerful in function. Its Easy to install and doesn't take up much space. Package Includes: Each package comes with hydraulic cylinder part, suitable for rowing machine, stepper, and home fitness. Versatile Use: Ideal for home gyms or commercial fitness centers, this hydraulic cylinder part enhances your workout by providing adjustable resistance levels to meet different training needs. Specification: Material: Iron Size Chart: length: 35.5cm/13.98inch, shortened to : 20.7cm/8.15inch Package Includes: 1 Hydraulic Cylinder Accessories Note: Please allow slightly errors 1-2cm differences due to manual measurement.