Plastic Hexagonal M4-M22 Expansion Bolt & Screw Protective Cap Cover

This versatile protective cap cover is designed to securely fit a range of hexagonal bolt and screw sizes, from M4 to M22. Made from durable plastic, it provides a clean and finished appearance while safeguarding against rust, corrosion, and accidental damage. Ideal for use in both indoor and outdoor applications, this cover enhances the longevity and aesthetic appeal of fasteners by keeping them shielded from the elements and contaminants. Simple to install, it offers an efficient solution for maintaining the integrity of mechanical connections. Material Grade: plastic Product Grade: A-level Surface treatment: Without treatment Custom processing: yes Manufacture country: China Instructions included: No