Product Specifications: 8 Pieces roller shutter stoppers, length 40 mm, width 20 mm at the bottom, width 25 mm at the top, sturdy design, slightly tapered, sufficient to meet daily installation needs. High Quality Material: Roller shutter stoppers made of high quality PVC, sturdy, not easy to deform, not easy to break, wear-resistant, no color loss, hollow interior, high strength, weather resistance, cold resistance, waterproof, heat resistance, sun resistance, long service life Product Use: When the curtain is rolled up, it prevents the curtain from overwinding on the hood, and when the curtain is lowered, it prevents the curtain from overwinding on the rail, which is especially important for manual winding (belts or cranks) Easy to Install: Mounted on the end molding or the bottom profile of the shutter rolling shutter, it only requires a screwdriver to fix it securely, making it quick and easy to install and use, without wasting valuable time. Widely Used: Roller shutter buffer stop is designed to be discreet, so it can be fitted to any roller door without affecting the aesthetics of the shutter, and can be used on roller doors already fitted with stops, as well as on newly installed roller doors.