Abstract: When an operation wall of an inner member is inserted into an insertion portion of an outer member and an engagement piece does not receive a cam operation due to a slanted cam portion, contact pieces of the outer member do not correspond to a positioning hole of the inner member and are located in a position so as not to be inserted into the positioning hole. When the outer member is inserted into an attachment hole of an attachment receiving member with maintaining a state where the engagement piece does not receive the cam operation due to the slanted cam portion, the contact pieces are elastically deformed inwardly and located in a position so as to be inserted into the positioning hole.

Abstract: In a clip, when an inner member and an outer member are locked with each other, a first projection and a second projection of each engagement piece are located in an operation hole. When a tool is inserted into the operation hole formed on the inner member in the locked state, engagement of the first projection and an engagement hole is released and the locked state is released. When the tool is pulled from the operation hole in a direction opposite to the inserting direction, the inner member and the outer member are in a provisionally locked state.

Abstract: When an operation wall of an inner member is inserted into an insertion portion of an outer member and an engagement piece does not receive a cam operation due to a slanted cam portion, contact pieces of the outer member do not correspond to a positioning hole of the inner member and are located in a position so as not to be inserted into the positioning hole. When the outer member is inserted into an attachment hole of an attachment receiving member with maintaining a state where the engagement piece does not receive the cam operation due to the slanted cam portion, the contact pieces are elastically deformed inwardly and located in a position so as to be inserted into the positioning hole.