"Cuts inflation time by half when inflating a tire with the core retracted. Easy to use. U.S.A. Accessory Type Retracting tool, Tire Type Universal, Dimensions L x W x H in. 14 x 1 x 1, Recommended Use Tire change accessory. Cuts inflation time by half when inflating a tire with the core retracted Reduces inflation/deflation time by allowing the operator to remove the valve core safely during the process Eliminates the risk of eye injuries from 'flying' valve cores Clear body allows operator to see valve core is fully retracted 106 CFM flow rate Easy to use"