This is a wood resin shift knob made by selecting and using naturally twisted or indented parts of wood. Since no two are alike, each one is unique. The resin is treated to minimize air bubbles, but some may still be present. Due to being handmade, there may be slight axis misalignment. Please check the photos before purchasing. 【Size】 Length: Approximately 60mm Thickness: Top: Approximately 43.5mm 　　　　Threaded side: Approximately 40mm 【Thread】 　M12/1.25 【Resin Color】Flores Resin 　Green Marble 　White 【Top Coat】Flores Resin 　Clear 【Important】 The resin part may soften when the temperature inside the car exceeds 60 degrees Celsius. It will return to its original hardness when the car's interior temperature drops. Please understand this before purchasing. This is not a racing specification, so please use it gently.