It specifically fits the Milwaukee 2 & 3 Drawer units (48-22-8443 & 48-22-8442).This is the specific tool the insert is designed for: https://www.milwaukeetool.com.au/power-tools/carpentry/multi-tools/M18FMT-0.html Features – Super Flexible Design Maximum Storage Space – x3 variants available to support the left, middle or right section of the drawer. Each is custom designed to ensure you maximise the usable storage space. Blade Storage – Designs specifically to store as many supplies as possible. There’s the two main dividers/tubs on the side, but there’s also storage space under the tool itself! The drawer is deeper than the thickness of the tool, so I designed in space under the tool where additional supplies can be stored without interference as the tool is raised up. 2 & 3 Drawer Support – The inserts have been designed to be compatible with both the 2 and 3 Drawer Packout units. They will be most effective when used in the 3 Drawer units as that is what the depth of the insert has been based on, although they will still fit the 2 Drawer if you’d prefer.