Molten PGA10 Analog Pressure Gauge Easy To Use High Quality Universal Pump High quality ball only pressure gauge with over inflation release button.A must for any coach or anyone serious about ball games. Correct inflation ensures that all Molten balls travel through the air accurately and/or that it bounces correctly on the playing surface. Correct ball inflation is important to maintain a technically superior product. The correct ball pressure can be found printed on all Molten Balls and an inflation chart is available on the website under our & 39;Technical& 39; section.ATTENTION- When inflating a ball with a pump or using a pressure gauge, it is critical that the needle is lubricated before insertion. We suggest soft soap would be a suitable substance. Model PGA10