1. Material: CRV complex vanadium steel 2. Surface treatment: blackening 3. Square head size: 1/2 inch, 3/8 inch 4. Square head specifications: 12.5 mm, 10 mm 5. Head shape: 6 corners, 12 corners 6. Length: 9/8/7.8/7.4/5/3 cm 7. Weight: 2.135 kg 8. Scope of application: auto repair and mechanical repair 9. Features: strong and durable material, long service life, high strength, wide applicability, easy to use 10. Contains: 29x90 mm (7 mm slot); 27 mm (12 square) x 78 mm; 7/8 inch length 90 mm (18 mm slot); 1/16 inch x74 mm length; 7/8 inch 30x80mm (7mm slot); 22x90mm (7mm slot); 22mm size 50x58mm
