1.SUITABLE SIZE: This caulking gun storage rack measures 16.2 x 6.5 x 3.4 inches / 41 x 16.5 x 8.5cm, the diameter of each large hole is 2 inches / 5cm, and the diameter of each small hole is 0.6 inches / 1.5cm, the suitable size provides you with convenient use. In addition, the practical all-in-one design allows you to hold 1 caulking gun, 6 caulking tubes and 6 caulking nozzles, helping you to organize your caulking gun tools efficiently. 2.DURABLE MATERIAL: This caulking gun organizer rack is made of high-quality metal with a coated surface for long-term use. The base is sturdy and provides strong support for the caulking gun and caulking tube. 3.EASY TO INSTALL: This caulking gun holder has a compact design and is easy to install. The screw accessories included in the package simplify the assembly, when installing you just need to attach the base horizontally to the rack and then use the screws in the package to fix it according to the mounting holes, even the first time users can do it easily and won't take up too much of your precious working time. 4.SPACE SAVING: This caulking gun rack can be mounted on a tool shed, pegboard, tool cart or wall, you just need to install it where you want to place it when you are using it, not only for you to organize the caulking gun and tubes at the same time but also to keep your workspace organized, neat and tidy with tools within reach.