This is a plastic clip located at the end of the wiper arm, which can often break off while attempting to install a replacement. The wipers are of the newer style. Part number on the underside: W000050335 Compatible with vehicles: For a certain brand A-Class W176 2016-2021 For a certain brand B-Class W246 2016-2021 For a certain brand C-Class W205 2015 - 2021 For a certain brand E-Class W213 2016-2021 For a certain brand Vito W447 2014-2021 For a certain brand V-Class W447 2014-2021 For a certain brand GLC-Class X253 2016 - 2021 For a certain brand CLA-Class 2016-2021 It may also fit other models; if you have a specific one in mind, please ask and I'll look it up. About Us AutoXbert An automotive company that has been one of the largest online automotive parts and accessories stores since 2008. Our goal is to become the largest "B" to "C" online auto parts retailer globally within the next five years. We strive to offer exciting and innovative products, providing our customers with the latest motor parts they desire. Why Choose Us? 1. An extensive variety of products -- With over 2,200,000 items in stock, AutoXbert is one of the largest online stores worldwide. You'll have more choices than you can imagine, with over 100 new arrivals daily! 2. Affordable prices -- Having offered the latest car parts and accessories for nearly a decade, we keep up with the newest trends while ensuring that our prices remain as low as possible. 3. Free worldwide shipping -- Yes, you can enjoy free worldwide shipping with us (unless stated otherwise). This is a reality, not a joke. 4. No-questions-asked refund and return policy -- Any quality issues or breakages can be returned or refunded. Shipping: 1. Receiving time = Processing time + Shipping time 2. Processing Time: Around 5-15 Days 3. Shipping Time: 15-26 Days By Air Mail, Free. 3-10 Working Days By Express. Notice: When placing an order, please select a shipping method and pay the total amount including shipping fees. Ensure that your current address is accurate within 1-2 days after payment! We do not guarantee delivery times on all international shipments due to varying customs clearance times in different countries, which may affect how quickly your product is inspected! Our Guarantee: If you are not completely satisfied with the quality of the products purchased, you may return or exchange your items within 30 days from the delivery date. Request: 1. Items must be returned within 30 days from the delivery date. 2. Items should be unused, undamaged, and in their original packaging. 3. Return shipping fees are the responsibility of the buyer. Feedback: 1. Your feedback is essential to us and other buyers. Please take a moment to leave positive feedback if you are satisfied with our product and service. 2. Contact us before leaving neutral (3 stars) or negative (1-2 stars) feedback. We will do our best to resolve any issues and ensure you have a positive shopping experience. Thank you! Contact Us: 1. If you have any questions or need assistance, please feel free to reach out to us! Thank you! 2. We strive to respond promptly and are happy to answer any questions you have.