To enable a snap to be reused and simplify a removing work.

When the snap 10 engaged in a sheet metal is removed, the driving end 24b of a lever 24 is pulled up in the direction apart from the sheet metal. Then the lever is deformed upwards from a supporting axis 22 as a fulcrum. A joint 26 is pulled up by the deformation of the lever 24, and a bridge 28 is deformed into a mountain shape by the joint 26. As elastic legs 14 are deformed in the direction close to each other according to the deformation of the bridge 28, the engagement of a hole edge part and an attachment projection 16 is unlocked. Accordingly the snap 10 can be removed from the sheet metal. Thus, as the only lever 24 operation can easily remove the snap, the removing work is easy, and the snap 10 can be reused because it can't be destroyed at the removing work.