145 Pieces Nut Covers, M4 M5 M6 M8 M10 M12 Black Bolt Covers, Nut Caps, Screw Head Covers, Hexagonal Protective Covers for Nuts, Screws, and Bolts

【Multiple Sizes】Includes black nut covers in 6 sizes: M4*7, M5*8, M6*10, M8*13, M10*17, M12*18, 145 pieces in total, to meet your various needs.【Beautiful and Practical】Hexagonal nut caps are good for protecting screws from rust, water, dust, etc., which extends their lifespan, covers the screw heads, and improves the appearance.【Easy to Use】Simply insert the correct size screw into the hole for the screw head cover and press firmly; one person can easily do this.【Nylon Material】These screw and nut covers are made of high-quality nylon, with a smooth, burr-free surface that is scratch-resistant, durable, and difficult to deform.【With Storage Box】Different sizes of hexagonal screw protectors are placed separately in the plastic box to avoid confusion, making it easy to carry and use.