Tailgate Scraper Maintenance Kit 2172937 for W195 W200 W205 Wear-resistant scraper blade kit for the rear tailgate of the milling drum housing, with pre-drilled mounting pattern A worn tailgate scraper is not a cosmetic problem. It sits behind the milling drum and drags the milled surface clean as the machine advances. Once the blade edge rounds off, three things follow in order: material starts riding over the blade, it drops behind the machine instead of into the conveyor,