1. The whole is forged with chromium molybdenum steel, heat treatment, high hardness, impact resistance 2. Strong torque, suitable for pneumatic and electric tools, thick design 3. The surface is polished and phosphated, which is beautiful and not easy to rust 4. Approximately 30 degrees of movement angle, easy to use 5. Standard: metric 6. Material: chrome molybdenum steel 7. Weight: about 50g/piece for 1/4 inch, about 80g/piece for 3/8 inch, and about 160g/piece for 1/2 inch 8. Interface specifications: 1/4 inch (6.3mm), 3/8 inch (10mm), 1/2 inch (12.5mm) 9. Length: about 4 cm/piece for 1/4 inch, about 5 cm/piece for 3/8 inch, and about 7 cm/piece for 1/2 inch
