Is your Mercedes SLK's hood getting heavy? If it doesn't stay up on its own anymore, the gas struts are shot. This is a direct replacement pair (you usually need two) for the front bonnet/hood on the SLK R170 models from 1996 to 2004. It replaces the original OEM part number 1708800229. Made in Europe by INSUPPA from stainless steel, these are high-quality struts designed to lift and hold the hood securely. Installation is usually pretty simple with basic tools - just pop the old ones off and clip the new ones in. They come with a solid 3-year warranty. Don't risk the hood slamming down on your head - replace those tired struts and get back to safe, easy engine access. Your back (and head) will thank you.