Features: Make of stainless steel material, it has good durability and stability. The length of the inflation needle is 1.5inch, with an outer diameter of 0.1inch and an inner diameter of 0.16inch. Very suitable for various types of pumps. Convenient to carry and use. Suitable for indoor and outdoor use. Round hollow and two-port tip designs speeds inflation by increasing airflows and protect your ball from being punctured. It can be widely used in the inflation process of inflatable balloon and sports equipment such as football, basketball, volleyball, air cushions, swimming rings, etc. Specifications: Material: stainless steel Needle size: Approx. 3.8x0.7cm/1.5x0.16inch Package Includes: 30pcs Airs Pump Needle note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.