Mudder Ball Pump Needle for Sports Balls, Football and Basketball, 10 Pieces Can be applied for air pump, hand pump, ball pump Needles material: stainless steel Fit for inflate soccer balls, basketballs, volleyballs, footballs, netballs, and so on Length: approx. 38 mm; Outside diameter: 7 mm; Inside diameter: 4 mm Package includes: 10 x ball pump needle