It has the specification that both ends of the head part on the Combination Ratchet Wrench JOKER are changed to the open wrench with different sizes.
Due to the special plate structure of the spanner part, a nut/bolt does not fall.
It can insert a bolt sideways to a narrow place while holding a bolt with a spanner or it can rotate a bolt with a strong torque while putting some muscle and fastening over.
The double hex structure of the spanner part can rotate a stripped or rust bolt that cannot be rotated with a typical spanner.