The 25-Piece Air Compressor Accessory Kit comes with various air compressor accessories to help you connect air tools and hoses to compressor. The fittings are all 1/4 in. pipe thread and plugs and couplers are 1/4 in. Industrial style. The kit has a blow gun that can be used for cleaning surfaces. Includes needles, nozzles and air chuck to help with inflation applications and includes a case that prevents the loss of small parts and makes storage easy.