General description 100 pieces of M4 threaded insert rivet nuts made from durable aluminum alloy, designed for repairing furniture, decorations, and crafts. These rivet nuts offer excellent corrosion, water, and rust resistance. Technical specifications Material: Aluminum alloy Dimensions: 11 x 9 mm Compatibility and accessories Compatible with various materials including steel, plastic, fiberglass, and wood Installation Easy to install with a serrated shape that increases friction with the contact surface Designed for stable assembly and reduced likelihood of falling off Usage Widely used in automobiles, furniture, handicrafts, and other industrial products