Product Specifications Product Name: M8 Black Leather Universal Package Includes: 1 x Shift Knob (Diameter 8mm, 10mm, 12mm) Compatible screw size: M8 pitch 1.25 Power supply: DC 12 V Size: Approx. 4.3 x 2.2 x 0.5 inches (110 x 57 x 12 mm); Compatible models: Shaft diameter is 0.3 inches (8 mm), 0.4 inches (10 mm), 0.5 inches (12 mm). This shift knob fits most automatic transmission shifters. Please check the size before purchasing! LED Lights Up 7 Colors Changing Shifter Knob Perfect for Dressing Up! The color will change and shine with each touch, giving you a great presence. Lights up when touched. When you touch the middle, the sensor reacts to 7 different colors and lights up while changing Item Material Material: Head layer cowhide leather + ABS plating Color: Black Leather + Chrome Color This is a high quality product made for your car by cutting it one by one without the cost of a lot of favourite leather. Built-in lithium battery; Built-in lithium battery, can last for 20 days when charged for 1 hour. Recycled batteries are durable. Can be charged from a cigarette lighter socket. The included adapter allows you to charge it from your car. It can also be charged by a computer, etc. Note: For 5R / Left R6 / Right R6 plush, please be sure to fill in the notes column. MT cars may not be available depending on the model and year. Dust-proof cover, buttons, and both versions cannot be attached. Manual Transmission (MT) Manual Yes Automatic Transmission (AT) Automatic Step 1 Step 1 The original car gear is twisted counterclockwise step 2 Turn the new gear clockwise step 3 Tighten it all