【Smart Compartment Design - Professional Caulking Tool Organiser】 The mastic gun rack measures 40.5x16.5x8.5cm/15.9x6.49x3.34inch, with multiple independently planned storage compartments. It can simultaneously store one caulking gun, six tubes of sealing glue, and six nozzles, keeping all tools organized and eliminating the hassle of searching. 【Optimised Layout - Maximum Storage in Minimal Space】 Designed for limited workspaces, this silicone tube holder van uses vertical storage to centrally manage cluttered tools. Its compact structure maximizes space saving, allowing even narrow garages or tool carts to maintain a neat and organized work environment. 【Durable Carbon Steel - Rust-Resistant & Long-Lasting】 The sealant tube holder is made of high-quality carbon steel, durable and sturdy enough to withstand daily wear and tear, preventing deformation due to tool weight and maintaining a clean appearance and storage function for a long time. 【Pre-Drilled Holes - Quick & Easy Installation】 Equipped with a complete installation kit, the caulk gun rack has pre-drilled positioning holes. Simply mark the location, drill holes, and installation is complete in minutes. No professional tools or complicated operations are required, instantly boosting work efficiency. 【Versatile Mounting Options - Adapts to Multiple Uses】 Whether installed on the tool wall in a professional repair shop, fixed to the side of a mobile tool cart, or in the storage area of a home garage, it performs its task excellently. It can even be expanded to store other tools such as spray cans and cleaning bottles.