Double-hand cross grisp type air pick

The utility model discloses a tube spanner. The utility model comprises an upper member, a lower member, and a connecting piece of the upper member and the lower member, wherein, the lower member comprises a sleeve cylinder for a handle, a handle, and an end part for a lower jaw opening. The sleeve cylinder for a handle is arranged at the outer part of the handle and is movably connected with the handle. The front part of the end part for a lower jaw opening is provided with a ratchet. The front end of the sleeve cylinder for a handle is provided with screw threads. The upper member is integration structure. The upper member is divided into an end part for an upper jaw opening and a grabbing part of the end part for an upper jaw opening. The inner side of the end part for an upper jaw opening is provided with ratchets which are arranged in vertical horizontal plane, which correspond to ratchets of the end part for a lower end part. The inner side surface of the grabbing part of the end part for an upper jaw opening is provided with screw threads which are engaged with the screw threads on the sleeve cylinder for a handle, etc. The utility model has the advantage of simple structure. The size of the jaw opening can be adjusted by directly adjusting the sleeve cylinder for a handle. Because the tube spanner is used, the utility model can be operated conveniently, and the labor can be saved. Thereby, the efficacy can be effectively improved.