Features: 1.High Strength: You can use the pack mount extension to stack any size fuel pack on top of the 1.75 gallon, perfect for your long distance traveling needs. 2.Practical Design: You can stack multiple packs together to use with one pack mount, making it an ideal and practical expansion option. 3.Stable Fixing: Dual locking mounts ensure that the installed gasoline pack is securely fastened, reducing the possibility of loosening and shaking. 4.Strong Reliability: Durable black anodized aluminum, high strength, not easy to rust, ensure stability and reliability for long time use. 5.Fast Installation: Simple installation steps and complete parts for quick installation on motorcycles or other outdoor equipment. Specification: Item Type: Gas Pack Mount Extension Material: Aluminum Size: 1.75 Gallon/4inx2.5inx1in Application: Use this Extension to stack any size fuel pack on top of the 1.75 Gallon