Magazine attachment for drywall screwdrivers GMA 55. The GMA 55 is the magazine attachment for drywall screwdrivers that allows for comfortable and fast work even in difficult positions, thanks to its ergonomic design and a lightweight of less than 0.4 kg. The depth can be quickly adjusted with its thumb wheel, and tool-free adjustment of screw length is also possible. The open design facilitates cleaning, prevents dust buildup, and thus increases the lifespan. The GMA 55 is suitable for drywall screws with a diameter of up to 5 mm and a length between 25 and 55 mm. Its strength is evident in repetitive tasks, such as attaching drywall panels to ceilings. The GMA 55 is compatible with all Bosch Professional drywall screwdrivers and cordless drywall screwdrivers. The PowerSAVE mode of the Bosch GTB 18V-45 Professional also works with the GMA 55 magazine attachment. The package also includes a PH2 screwdriver bit (145 mm). 1 x screwdriver bit (bit) PH 2.