The Multi Tube Holder is a versatile accessory designed to securely hold four tubes, making it ideal for use with Osmolator, Osmolator nano, and other similar fastening solutions. This holder is compatible with hose diameters ranging from 6 to 7 mm, and it can be easily attached to various materials with thicknesses up to 22 mm. Whether you need to organize your aquarium equipment or secure tubing in place, the Multi Tube Holder provides a reliable solution for your needs.