40 Sets(80pcs) M4 M5 M6 Jack Nuts Petal Expansion Nut Thins Fixings Dowels with Screws Assembly for Hollow Wall Iron Skin Line Use in Thin Soft

【Material】The Jack nuts assortment kit are made of carbon steel, galvanized surface or plated with black zinc, corrosion-resistant, strong and durable. 【3 Sizes】Total 40 sets petal bolts and nuts, including 10 sets M4x20mm, 10 sets M5x28mm, 10 sets M6x29mm, 10 sets Black M6x29mm. 【Wide Application】Perfect for iron plate, hollow plate, aluminum alloy frame, license plate, drying rack and container tag etc. 【Easy To Use】 Use a professional rivet tool, or clamp the rivet nut with a wrench, then use a screwdriver to hold the screw and material in place to complete the installation. 【Satisfaction Guarantee】If you have any problems when you use our products, please feel free to contact us on Amazon for a full refund or replacement service. We will contact you as soon as possible., Manufacturer: WeqeYent