You are looking at a 77-piece tool set. The set includes socket wrenches and taps in inch and metric systems. This professional set is indispensable for tapping holes. It includes double-sided socket wrenches for round and hexagonal taps. Convenient lever handles make it easy to turn the taps in the desired direction without having to twist them by hand. The special Twist Lock guide system reduces tap slippage and keeps the tap centered in the hole during tapping. High-quality hardened tools with a special coating guarantee long tool life and a perfectly clean thread. Ergonomic handles provide comfort and convenience when working. The compact plastic storage case protects against damage.