Color: Silver M12 x 153 + 31 Pitch 1.25 Shift Knob Extension, Same Diameter Extension. This is a product for M12 threaded shift extension and shift extension. I also have other shift extension parts for sale, so please come and take a look ☆ ↓ ↓ ↓ ↓ ↓ ↓ #Kuro's Shift Extension Page ↑ ↑ ↑ ↑ ↑ ↑ Diameter: 15 mm Extension: 153 mm Thread length: 31 mm Thread size: M12 Thread pitch: 1.25 mm Hole depth: 35 mm Thread hole size: M12 Thread hole pitch: 1.25 mm The pipe and thread cannot be separated. I often receive inquiries about whether it can be installed on each vehicle. Even if it can be installed on the car side, it may not reach the threads of the shift knob. Therefore, I cannot answer inquiries about the size. Please check the size yourself before purchasing. Free shipping.