The product is only the "set of 2" chest parts found in 1-3. Please see past listings for usage examples. Compatible Body Standards: 30ms Option Body 17, 18 Cestiere These are custom-made chest parts compatible with the above standards. You are welcome to cut off pins and modify them for other standards. They are made using a 3D printer and water-washable UV resin. You can paint, sand, and otherwise customize them to your liking. Search terms: Bishoujo Plastic Model Himepla