It is rare for Mi standard M10 volts to be used. It is thicker than 3/8 and a sense of security is different. Even so, it is saved that the pilot hole should be 13φ. It is one class better than 3/8 Unicon anchor than 10 mm all anchor, construction is easy, so it might be a point. Moreover, it was able to divert Unicon anchor driving rod and save tool. With 12 mm all anchor, the intensity of flesh is strong, and it is likely to be heavy in the future.