Designer: Yuichi Kuwamura This set is a collection of simply designed 5mm connection joints, perfect for customizing HEXA GEAR and Gigantic Arms models. Expand customization possibilities of joints by combining these parts with other 5mm connection parts. *The parts are made of HIPS (High Impact Polystyrene) material in dark gray. 【スペック】 Plastic Model Size: Approx. 22-23mm Material: HIPS [Set Contents] Double Joint Type x4 Simple Joint Type x12 Ball Joint Type x6