This combo specifically fits the Milwaukee 2 Drawer units due to the height of the 3-Plane Laser (48-22-8442) 3-Plane Laser Insert:- Secure cutout for storing the laser skin either with or without a 2ah battery on- Removable storage tub and space for additional batteries or misc items The specific tool that this is designed for is model M12 3 Plane Laser, link provided here: https://www.milwaukeetool.com.au/power-tools/lasers/laser-levels/M123PLA-0C.html M12 Soldering Iron Insert: The specific M12 Tool that this is designed for is model 2488-20, link is provide here:https://www.milwaukeetool.com/Products/2488-20 Features – Super Flexible Design Multilayered Storage – The design consists of two layers, a bottom layer to store all your supplies/hardware and a top layer that stores your tool, batteries and large items. The top layer simply drops in on top of the bottom layer and sits in place thanks to tabs I’ve designed into the parts