1 Hardness up to 58-60, extra-hard S2 alloy steel material with blueing surface treatment, integrated forging, which is anti-rust and durable 2 Bit with chamfer design, national standard 12-side bit have high accuracy, not easy to slip, very practical 3 Excellent S2 alloy steel material, strong and durable, which come with large torsion 4 Adopt humanized inner wall buckle design, works for non-slip, so that the bit is not easy to slip 5 12-side socket bit come with stable structure, excellent performance and long service life

What's in the box
1 x 12Side Socket Bit