10pcs metal momentary push button with IP67 protection: waterproof and rustproof, can be used in the humid or dusty environment. Hole diameter of push buttons: 12mm, hole thread push buttons: 0.75 mm. Momentary Type: Push Hold-ON, Release-OFF. Widely used: ideal for horn button, ect. 12mm push button type: Makes installation and disassembly easier. Quality after-sales service, if you are not satisfied with anything, please contact us for a full refund or replacement. Product Description Product Description: Product Name: Momentary Push Button Color: Silver Material: Nickel Plated Brass + Stainless Steel Head Shape: Head Up Head Diameter: 9/16"(14mm) Mounting Hole Size: 1 /2"(12mm) Push button hole thread: 0.75mm Terminal type: 2 pin, solder &nbsp ;Operation Type: Momentary Maximum Knob Rating: 2A/36V Protection Level: IP67, IK10 Operating Temperature: - 20 to +55 Contact resistance: 50m Insulation resistance: 1000m Mechanical life:> 500,000 times Electrical Life:> 50,000 times Momentary Type: Push Hold-ON, Release-OFF. Package includes: 1. 10 x Metal push button 2. User guide is NOT included, this product is recommended for professional users. But if you meet any problem during operation, please don't hesitate to contact us. We will get back to you within 24 hours. Notes: 1. These push buttons come with a rubber O-ring seal which makes them splash proof, but they can NOT be submerged in water. 2. For the wiring terminal push button, try your best to complete the soldering within 3 seconds. 3. Please allow 1-3mm error due to manual measurement. Thank you for your understanding. 4. We are committed to providing our customers with good products and excellent after-sales service. If there is any problem, please do not hesitate to contact us. We will resolve all issues.