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ProTool Professional Sports Ball Air Inflator Needle$13.69
Also works great for inflating flotation devices, beach balls and toys. Specifications: air inflating needle 5/16” (7.94mm) outside diameter MPT (male pipe thread), needle adapter 5/16” ID FPT and 3/8” MPT, connexion adapter 3/8” FPT and 1/2” MPT – fits 1/4” MPT fittings used on common 3/8” air hose. Excellent quality; made in Taiwan.