The plastic square post end cap is designed specifically for 90x90mm square tubes, providing a secure and professional finishing touch. With its square shape and a dimension of 90x90mm, it fits perfectly onto square tubes, protecting the ends and enhancing the overall appearance. The cap has a sturdy construction with a wall thickness of 2-4mm, ensuring durability and resistance to wear and tear. It effectively prevents dust, dirt, and moisture from entering the tubes, keeping them clean and prolonging their lifespan. Made from high-quality plastic, this end cap is suitable for a variety of applications, both indoors and outdoors.