Works Great For all Sports Balls. Footballs, Volleyball,s Soccer Balls, Basketballs, Kickballs, Dodgeballs & MORE! You'll never have to worry about under inflating or over inflating balls again! Must-have accessory for coaches, referees & training athletes to ensure proper ball response. Easy-to-read slide scale measures to 20 PSI in 0.5 PSI increments (.1 to 1.4 Bar), 13cm L w/out needle. Steel needle with corrosion resistant nickel finish inserts smoothly into rubber bladder. Needle threads securely into pen, 2 needles included; chrome-plated steel pen with handy pocket clip. Accurate measurement of basketballs, footballs, soccer balls & other low pressure air-filled items.