The Plastic Rectangular Cap is designed specifically for rectangular tubes with dimensions of 40x20mm. This cap serves as a protective cover, offering reliable dust and dirt protection for your tubes. It is made of high-quality plastic material, ensuring durability and longevity. The cap features a precise fit, securely covering the tube and preventing contaminants from entering. With its rectangular shape and smooth surface, the Plastic Rectangular Cap provides a clean and professional look to your application. Whether for industrial or DIY projects, this cap is an essential accessory for maintaining the integrity of your 40x20mm tubes.