Do not be fooled by cheap imitations, this is a genuine item from Japan.
Series: One Piece
Character: Nami, Zoro, Sogeking (Usopp), Sanji, Chopper, Robin and Luffy
Manufacturer: Banpresto
Series: Dramatic Showcase 3
Year of release: 2015
Height: box is 180 x 120 x 90mm
Box included: Yes
Item specifics: This figure was ONLY available in Japan in crane games (i.e. you could not purchase them hence they are very collectible) manufactured by the masters of figures, Banpresto.
This listing includes the entire set Volumes 1-4 (total of eight figures). 
Dramatic Showcase Series 3
Volume 1: Nami & Zoro
Volume 2: Luffy & Sogeking (Usopp)
Volume 3: Sanji & Chopper
Volume 4: Robin & Luffy