Package Contents: 20pcs M10 Hex Nuts and Bolts with Protective Cap (17mm Wrench) - Note: Before purchasing, please check the size and package size needed Premium Plastic: Made of high-quality PE plastic, sturdy, not easy to deform. The plastic hex nut cover is corrosion-resistant, non-aging, prevents ultraviolet rays with good low temperature resistance, lightweight, good toughness, and protects nuts and bolts. Protective Nut and Bolts: These polyethylene hex nuts can protect bolts from rust, water, dust, etc. They reduce dust and rain pollution, prevent bolt corrosion, beautify the appearance, and extend the service life of the bolt. Wide Application: Suitable for machinery equipment, petrochemicals, valves, gas pipes, bridge base barriers, street lights, and other places. Provide external protection for nuts and bolts to prevent weathering and damage. Designed for hexagonal shaped bolts and nuts, improves the finish of nuts and bolt heads, easy to install and remove