A molded product delivery apparatus comprising: a first transfer member that transfers a molded product for use in blow molding; and a second transfer member that transfers the molded product, wherein the first transfer member includes first paired chucks (720A, 720B) which are openable and closable and which hold a portion of an outer wall of the neck portion of the molded product, wherein the second transfer member includes second paired chucks which are openable and closable and which hold another portion of the outer wall of the neck portion of the molded product, and wherein, from a state where the molded product is held by both of the first paired chucks (720A, 720B) and the second paired chucks simultaneously, by opening one of the first paired chucks (720A, 720B) and the second paired chucks without interfering with the other, the molded product is delivered between the first paired chucks (720A, 720B) and the second paired chucks; and wherein the molded product is a preform, characterised in that: the first paired chucks (720A, 720B) each include a first holding piece contactable with the portion of the outer wall of the neck portion, wherein the first holding pieces project locally from respective upper surfaces of the first paired chucks (720A, 720B), and the second paired chucks each include a slit allowing a relative movement of the first holding piece, and a second holding piece provided on both sides of the slit and contactable with the other portion of the outer wall of the neck portion. a first transfer member that transfers a molded product for use in blow molding; and a second transfer member that transfers the molded product, wherein the first transfer member includes first paired chucks (720A, 720B) which are openable and closable and which hold a portion of an outer wall of the neck portion of the molded product, wherein the second transfer member includes second paired chucks which are openable and closable and which hold another portion of the outer wall of the neck portion of the molded product, and wherein, from a state where the molded product is held by both of the first paired chucks (720A, 720B) and the second paired chucks simultaneously, by opening one of the first paired chucks (720A, 720B) and the second paired chucks without interfering with the other, the molded product is delivered between the first paired chucks (720A, 720B) and the second paired chucks; and wherein the molded product is a preform, characterised in that: the first paired chucks (720A, 720B) each include a first holding piece contactable with the portion of the outer wall of the neck portion, wherein the first holding pieces project locally from respective upper surfaces of the first paired chucks (720A, 720B), and the second paired chucks each include a slit allowing a relative movement of the first holding piece, and a second holding piece provided on both sides of the slit and contactable with the other portion of the outer wall of the neck portion. the first paired chucks (720A, 720B) each include a first holding piece contactable with the portion of the outer wall of the neck portion, wherein the first holding pieces project locally from respective upper surfaces of the first paired chucks (720A, 720B), and the second paired chucks each include a slit allowing a relative movement of the first holding piece, and a second holding piece provided on both sides of the slit and contactable with the other portion of the outer wall of the neck portion.