10 PCS 0.3-4mm Hand Electric Drill Key Wrench

1. Material: chrome vanadium steel2. Standard: metric3. Surface treatment: chrome plating4. Wide range of uses, a variety of specifications are available, suitable for all kinds of hand drills5. Forged of chrome vanadium steel, strong hardness and durability6. Flexible conversion, portable operation, increase speed7. Comfortable grip and easy to use8. Specifications: 0.3-4/0.6-6/1.5-10/1.5-13/3-16/5-20mm9. Weight: 0.3-4mm about 15g/piece, 0.6-6mm about 24g/piece, 1.5-10mm about 20g/piece, 1.5-13mm about 42g/piece, 3-16mm about 62g/piece, 5 -20mm about 112g/piece10. Size: 0.3-4mm about 4.5x3.5 cm/piece, 0.6-6mm about 5.7x3.4 cm/piece, 1.5-10mm about 5.6x3.4 cm/piece, 1.5-13mm about 8x4 cm/piece, 3 -16mm about 9x4.8 cm/piece, 5-20 about 10.55x5.6 cm/piece