Inflator/ Deflater, Powered By 12V Source, With 3mm-15mm Nozzles 4 Sizes Of Nozzles, For A Variety Of Items You Can Inflate Things In A Fraction Of The Time Great For Children's Wading Pools Comes with 3 tips sizes: 1/4" (6 mm), 3/8" (10 mm) and 1/2" (13 mm) The inflator measures approximately 5" x 4 1/4" x 3 1/4" (127 x 108 x 83 mm)