Since the main shaft is of a penetrating type up to near the grip, it corresponds to a through nut and is lightweight. It is the biggest workmanship of Grip and the tip part as it is called the leading German WERA. In a narrow place where quarter socket does not enter at all and it can not be used there is only this and it is considerably handy. Domestic products are not good, so I changed trains, but the price is recommended cheaply in overseas made.
It was limited as a tool that can be used in a narrow environment, as a nut turning head with a small head and a deep nostril. The use environment is limited, high torque can not be applied, but it is good as a special worker.