Parcel Size: 45cm x45cm x8cm. Net Weight: 10.5kg. Base of left or Right Driver. Need modify- garage modify. You may need to drill holes and add some steel plates around to increase the floor area, so that it can fit your seat. Please make sure if your vehicle is suitable for this seat turntable before placing the order! Please allow 0.1- 0.5cm error due to manual measurement. The colors may have different as the difference display, please understand. Hi, installation as below, not same base in the picture, only for display. New arrivals from us, updated wired turning instead of handle.