The GN 2278-ALS-30-K-30 is a locking device manufactured by Elesa & Ganter. It is a type 30 knob, with a male thread size of M30 and a mounting hole of 30 mm. The knob is made of a galvanized steel plate with a sintered steel handle, and is designed for use in industrial, commercial, and residential applications. It features an automatically locking design, with a two-point notch for extra security. This knob is designed for use with any application that requires an adjustable handle, and is especially well suited for applications such as machine tools, commercial equipment, and furniture. The GN 2278-ALS-30-K-30 has a bright zinc plated finish that is corrosion resistant and has a long service life.