New and high quality. Made of high-quality materials for maximum durability and reliability. Seamless fit, for your car. Easy to install, no complicated tools required, easy to use. Professional workmanship, exquisite , novel and unique style. 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, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:As Shown Material:ABS Package Contents: 2 * Sliding Door Electric Contact Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.