M8 hex nut protective caps 20 pack plastic covers Package Contents: 20 x M8 Hex Nuts and Pan Head Bolts (13mm Wrench) Note: Before purchasing, please check the size and package size Premium Plastic: Made of PE plastic high quality, sturdy, not easy to deform. The plastic hex nut cover is corrosion resistant, not aging, prevents ultraviolet rays with good low temperature resistance, light weight, good toughness, and protects nuts and bolts. Protection nut and bolts: These polyethylene hex nuts can protect the bolts from rust, water, dust, etc. Reduce dust and rain pollution, prevent corrosion of bolts, beautify the appearance, thereby extending the service life of the bolt. Wide application: suitable for machinery equipment, petrochemical, valve, gas pipes, bridge guardrail, lamp post and other places. Provides exterior nuts and bolts to prevent weathering and damage. Designed for hex bolts and nuts, improve finish on nuts and bolt heads, easy to install and remove Please select the size from the drop down menu. Photo not contractual