The genuine SW-Stahl 81775L is a comprehensive 21-piece HSS-G (High Speed Steel - Ground) tap and die set. This high-quality tool set is designed for cutting and repairing both internal and external threads, covering common metric sizes from M3 to M12. The set includes seven HSS-G hand taps, seven HSS-G round dies, a robust tap wrench, a die stock, a precise screw pitch gauge, and a screwdriver. All components are neatly organized and protected within a durable metal case, making it ideal for professional mechanics and DIY enthusiasts requiring reliable thread work.