Suitable for 1/12 scale plastic models and figures.You can make the best hip joint by combining a ball joint, a connecting ball, and a specially shaped runner.1/12 Sozai-chan compatible parts.Set Contents:- 4mm sphere 2mm axis x 2 sets,- 4mm sphere 3mm axis x 2 sets,- 5mm sphere 2.9mm axis x 2 sets,- 5mm sphere 3mm axis x 1 set,- 6mm sphere 2.9mm axis x 2 sets- 6mm sphere 3mm axis x 2 sets,- 6mm sphere 4mm axis x 2 sets,- ball joint 2.9mm axis x 2 sets,- ball joint 4mm axis x 2 sets,- connection ball 5mm sphere x 6,- connection ball, 6mm sphere x 2 pieces