Speak the full range of goose vocabulary this season with the Tim Grounds Championship Calls G Overhauler Goose Call. Combining Grounds' short reed Triple Crown Gut System with its newly designed A.F.C.(Air Flow Control) Mouth Piece, the G Overhauler delivers a wide range of sound with superior volume control. This call helps hunters crank out the loudest comebacks down to the softest laydown calls with ease to bring those hard hunted, weary migrators on down. Manufacturer model #: OVEREB. Versatile goose call delivers the full range of goose vocalizations in the field Short reed Triple Crown Gut System - delivers wide range of goose sound A.F.C. Mouth Piece for great volume control Delivers the loudest comebacks down to the softest laydown calls with ease