Zinc-Alloy Construction: Joyangy's barn door roller stopper is crafted from high-quality zinc alloy, ensuring exceptional durability and long-lasting performance in your sliding door system Precision-Engineered for Seamless Fit: Designed to fit tracks measuring 41×7mm/1.61"×0.28"(L×W), our roller stop provides a secure and precise fit, ensuring smooth operation and reliable door movement limitation Complete Installation Kit: Each package includes 2 premium door stoppers and a convenient wrench, providing you with all the necessary components for a hassle-free installation process Sleek and Modern Design: With a black, simple Nordic style, Joyangy's sliding door stop effortlessly complements a wide range of interior décor styles, adding a touch of sophistication to your home or office Enhanced Door Protection: Our barn door roller stopper features a noise-free buffer rubber cover, gently limiting the movement of your door without causing any damage, ensuring both quiet operation and long-term protection for your sliding door system A+