Engineering:Ball pump needle
From HandWiki
Short description: Device through which air passes from a pump into an inflatable sports ball
A ball pump needle is a metal device through which air passes from a pump into an inflatable sports ball, such as the balls used in soccer, volleyball, basketball, rugby, handball or water polo. Using a lubricant facilitates the insertion of the needle. A ball needle is related to a ball pump.
References
Original source: https://en.wikipedia.org/wiki/Ball pump needle.
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