Efficient, easy to operate, protection

-Size: 8 & 9mm, 10 & 11mm, 12 & 13mm, 14 & 15mm, 16 & 17mm, 18 & 19mm, 20 & 21mm, 22 & 23mm, 24 & 25mm.

-9pcs / set, including nine different sizes above.

1. Continuous swirling without repetition of interpolation and retreat, efficient for work.

2. Both metric and inch are available, and each set has two head of different size, can be used to a variety size of nuts.

3. Can be inserted in any direction on the nut, easy to operate.

4. Protection of nuts will not be rounded, bald angle.