Material: Alloy+ Synthetic silk ito+Imitative rayskin Fitment: Universal Adapter diameter: 8mm/9.5mm/10mm/12mm The katana shift knob is made from 2 parts:a handle and a tsuba 100% Brand New & High Quality Tsuba material: Alloy Handle：265mm Height x 14mm hole Package Includes: 1 x Samurai Sword Shift Knob 4 x Black Plastic Adapters (8mm/9.5mm/10mm/12mm)