Description: Material & Size: Crafted from iron, these M4 thread cap nuts are sturdy and reliable, ensuring durability for your lighting fixtures. The screw caps measuring M4x9mmx11mm Package Includes: Set includes 100 pieces of M4 decorative knurled screw nuts, providing you with enough replacements for your daily needs Easy Installation: Designed with a grooved surface, these decorative knurled nuts are easy to install and replace, practical and convenient Stylish Design: Featuring a modern simple design, these decorative lamp knob nuts match any room decoration, whether it's the living room, bedroom, kitchen, or home office Versatile Application: Decorative light fixture screw caps, m4 ceiling light screw covers, lamp shade holder knob nuts, suitable for ceiling lights, wall sconces, pendant lights, chandeliers, ceiling lights Specification: Material: Iron Size Chart: 0.9cmx1.1cm/0.35inchx0.43inch Package Includes: 100 Pieces Light Fixture Screw Cap Covers Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.