Size: The black dome bolt nut has a total of 145, including 50 pcs for M4, 30 pcs for M5, 20 pcs for M6, 20 pcs for M10, 15 pcs for M12 and 10 pcs for M8. Please carefully confirm whether the size is what you need before purchasing. Reasonable Design: The bolt cover screw cap is a round head design, which can prevent accidental damage caused by the nut and screw protrusion. Protect your family and children from being scratched by screws. Multi-function: The nut cover can prevent screws and nuts from rusting; Reduce dust pollution and extend the service life of screws and nuts; Prevent scratches and injuries. Material: The dome bolt covers and plastic storage box are made of high-quality plastic. It has no pollution, has good low temperature resistance, and will not be easily deformed and broken after long-term use. Easy to store: The plastic hex nut cover is placed in the plastic storage box according to size, you can easily find the size you need. It can also be neatly placed after use. Easy to store, store and transport. Name: Bolt Covers Screw Cap Material: Plastic Quality: 145pcs Weight: 210g Color: Black Size: M4, M5, M6, M8, M10, M12 Package Includes: M4#: 50pcs Dome Bolt Covers M5#: 30pcs Dome Bolt Covers M6#: 20pcs Dome Bolt Covers M8#: 10pcs Dome Bolt Covers M10#: 20pcs Dome Bolt Covers M12#: 15pcs Dome Bolt Covers Note: It does not include no other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. . Due to manual measurement. Please allow the deviation. Thank you! Good quality product