Features: Using high class ceramic material of good quality, have strong resistance of high temperature.<br> Easy to install without other special requirements, making the welding cup convenient to use.<br> Alumina ceramic welding cup is sturdy and durable, which possess a long service life.<br> This welding torch accessories set is suitable for WP9/20/17/18/26 series welding guns, useful and practical, easy to install and convenient to use.<br> Adopt excellent craftsmanship to bring small exquisite shape, easy to carry and store.<br> Specification: Material:Ceramics<br> Front Outer Diameter:Approx.20mm/0.78inch<br> Rear Outer Diameter:Approx.24mm/0.94inch<br> Rear Inner Diameter:Approx.18.9mm/0.74inch<br> Height:Approx.25.5mm/1inch<br> Diameter of 2.5 mm<br> 2.4mm aperture<br> Package Includes (10# 12# 14# 16# 24# Choose what you need):<br> 1/2 PCS x Ceramic Nozzle<br> note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.<br> 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.