Product detail: Weight: 1.5g each piece Pump Needles Material: stainless steel Outside Diameter: 7 mm Inside Diameter: 4 mm Length: Approx. 38 mm Universal Size for pump: Universal fit for standard hand pump, ball pump, bike pump, gauges as well as most foot pumps! Widely Use: For footballs, basketballs, soccer balls, volleyballs, yoga ball; Kids p..