Measurement of Ball Pump Needle Set: The metal ball needle thread is 0.7cm in diameter and the needle is approximately 3.75cm / 1.5 inch in total length. HIGH QUALITY MATERIAL: This tool kit is made of high quality metal and plastic, strong and durable, not easy to break and can be used for a long time Overall design: these needle inflation tools are in size and design general purposes, good accessories for compressors, electric air pumps and almost all hand pumps. Wide scope of application: you can use this set of needles with pump to inflate inflatable toys , balls, basketball, exercise balls, sports equipment, bicycle tires, etc. These needle inflation tools are in general size and design, good accessory for compressors, electric air pumps and almost all hand pumps. Wide range of applications: You can use this needle kit with pump to inflate inflatable toys , balls, basketballs, gym balls, sports equipment, bicycle tires, etc. Specifications: Materials: metal and plastic. Quantity: 3 pieces. Contents: 1 metal ball needle (American thread). 2 plastic nozzles with metal thread. Note: Keep out of reach of children under 3 years old. Also, you should keep the products away from pets.