Hand tap set made of HSS DIN 2181, 2 parts Metric ISO fine thread to DIN 13 tolerance class ISO 2 (6h) Material: HSS = high-speed steel For easily machinable steels up to 750 N / mm² Thread size: M 18 Gradient: 1.50 mm Shank external square: 11.0 mm Contents: 1 pre-cutter and one finishing cutter each