Suitable for home,office, supermarkets, shops, markets, boutiques, etc. DIFFERENCE NOTICE - Please allow 1-3mm measurement difference due to manual measurement and a certain degree of color difference caused by camera lenses, different phone screens, and different monitors. Can also be used to extend the thread length of screws or bolts. Stainless Steel Hex Coupling Nut, Anti Corrosion M12 Connector Silver, 5 Pcs for Screw Bolts Material: Stainless Steel, Carbon Steel Type: Round Head Connection: Common Bolt Head Style: Round Production Capacity: 1000000PCS/Week This rod coupling is designed with female thread and round rod. Installed with sleeve anchor, wedge anchor and all thread rod, etc. Batch-production & Manual Measurement: Please allow 1-3mm measurement difference due to manual measurement and a certain degree of color difference caused by camera lenses, different phone screens, and different monitors. Features: Good rust and durable, great for both indoor and outdoor use. Can make the advertisement bolt as your drawings and many size of advertisement bolt. Installed with sleeve anchor, wedge anchor and all thread rod, etc. Suitable for home,office, supermarkets, shops, markets, boutiques, etc. Applications Also can be used in glass, as a Standoff Pin for flush mounted or surface mounted glass attachments. M4 Coupling Nut Xiaoyztan 12Pcs M4 Thread Round Coupling Nut Stainless Steel Sleeve Stud Nut Connecting Hardwares 12mm Height Stainless Steel Sleeve Nut