Note: This item is delivered deflated, you must use the pin and pump to pump the air yourself. Please use basketball and soccer ball pin and pump to pump the air. Thanks. About it:What can’t this creative tool fix is a better question! This opener is made of durable, tacky rubber and makes opening even the most stubborn screw-on case backs easy. Just squeeze, press and turn! Conforming evenly and firmly to a variety of watch sizes and surfaces, the ball enables you to safely and effectively remove the back without damaging the watch. Makes a great addition to any watchmaker or hobbyists toolkit! This opener is available in blue, green, red, purple or yellow. We ship random colors unless a specific color is requested. Features:Makes screw-on watch back removal easySoft, pliable design protects watch from scratcheswashable Specification:Diameter: Approx.3-5″Weight: 0.8 oz (1 ball)Material: RubberColor: Blue, Green, Red, or Yellow Package:One (1) watch case openerScrewball is delivered as “Deflated”This Item is Shipping from California, USA.On Jul-28-19 at 22:27:10 PDT, seller added the following information: