Original JDM Tsurikawa Suichuka / Flower Shift Knob 2021 NEW MODEL with different flower colors Suichukas shift knobs were originally hand-made, using dried flowers trapped in clear resin, and was found in various size and shape. The Japanese word suichuka 水中花 literally means "flower inside water". The Suichuka fever really started in the 80s and the knobs were very popular among truck drivers. Later, they became Bosozokus and Japanese oldschool enthusiasts’ favorite accessory. The authentic Japanese vintage flavor! After months of researches for the perfect Suichuka, we decided to develop our own product. We carefully chose the flowers to give a melancholic flavor and a unique retro look; and designed the shape to offer a good feeling in hand and help shifting. The total length is 90mm and the top diameter is 40mm. Default thread is M12x1.25 but we also provide 3 metal adapters to cover M10x1.5, M10x1.25 and M8x1.25 applications. Our Suichuka uses high quality acrylic with metallic insert to resist time and hardcore shifting. Tested and approved! Please note that our Suichuka are hand-made. The colors, shape and arrangements of the flowers vary from one model to an other. IMPORTANTOur Suichuka knob fits a large selection of vehicles equipped with manual transmission. It DOES NOT fit automatic transmissions. Please make sure your shifter thread is compatible with our adapters prior to making a purchase. If you have a doubt, don't hesitate to contact us! DETAILS Length: 90mm / 3.5"Diameter: 40mm / 1.5”Weight: 150gMaterial: Acrylic / metal insertDefault thread: M12x1.25Adapter thread: M10x1.5, M10x1.25 and M8x1.25Adapter material: metal