Bosch GMA 55 Professional Collated Screw Attachment built for faster and more comfortable working even in difficult positions thanks to its ergonomic design and its light weight of less than 0.4kg. With a thumbwheel, the depth setting can be adjusted quickly, and tool-less screw length adjustment is also possible. The open design facilitates cleaning and prevents dust deposits, thus increasing its lifetime. Compatible with all Bosch Professional corded and cordless drywall screwdrivers like GTB 18V-45, GTB 12V-11, or GSR 18 V-EC TE. Specifications: Max. Screw Diameter:5mm.Screw Length:25 – 55mm.Max. Screw Head Diameter: 9.5mm.Weight: 0.36kg.