Ball pump needle set dimensions: The metal needle has a diameter of 0.7 cm and is approximately 3.75 cm / 1.5 inches long. 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 inflation needles are of general size and design, good accessories for compressors, electric air pumps and almost all hand pumps. Wide range of uses: You can use this needle set with a pump to inflate inflatable toys, balls, basketballs, exercise balls, sports equipment, bicycle tires, etc. These inflation needles are of general size and design, good accessories for compressors, electric air pumps and almost all hand pumps. Wide range of uses: You can use this needle set with a pump to inflate inflatable toys, balls, basketballs, exercise balls, sports equipment, bicycle tires, etc. Specifications: Material: 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 of age. You should also keep the products away from pets.