. Made of high-quality materials for maximum durability and reliability. Seamless fit for your car. Easy to install, no complicated tools required. Professional workmanship, elegant and unique design. Type: Sliding Door Electric Contact Switch Part Number: A6398200654 A6398200311 Fitment: for W447 W448 W636 W639 W907 W910 447 448 Note: Installation guide not included. Professional installation is strongly recommended. Please verify compatibility to ensure the item meets your needs. Product may vary slightly between batches, including minor color or design differences, which do not affect functionality. Color: As shown Material: ABS Package Contents: 2 x Sliding Door Electric Contact Switch Package includes only the items listed above; other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.