1. The adjustable ratchet tap wrench can adjust the positive and negative rotation at will. The middle is a sitting key, which can be locked and practical, and can be easily mastered by one hand operation 2. Detachable booster rod, high-quality casting, surface plating process, thick texture 3. High hardness, anti-corrosion and anti rust, firm and durable 4. Clamping fast one hand operation is widely used in all walks of life, and one hand operation is easy to master 5. The size of the clamping block can be adjusted, and the diamond texture anti-skid design of the head is beautiful and practical 6. High temperature quenching and smashing treatment, high temperature quenching is not easy to deform and crack, wear-resistant and durable