The narrow-backed staples fit staplers from the following brands: AEG, Bosch, Black+Decker, Bukama, Esco, kwb, Lux, Metabo, Novus and Wolfcraft. The narrow-backed staples type 55 are ideal for general DIY tasks and professional stapling tasks. They provide extra strong joints and are ideal for a wide range of thin and also thicker materials. The staples have a narrow back so they can penetrate deeply into the material and provide a good grip with a very discreet staple back. They are particularly suitable for stapling thin materials where the staple back must not be pressed into the material