Audiologist-recommended NanoClean Fine Instrument Hearing Aid Cleaners feature a stiff threader and a soft, spongy, nylon brush to safely and effectively remove wax and debris as well as absorb moisture. A unique "thread-and-pull" cleaning action gets the job done easily and quickly. Ideal cleaning tool for: thin tube and standard hearing aids tympanometer tubes in-ear sound monitors and police radio earpieces. Helps maintain the hygienic condition of your hearing aids and earpieces. Cleaning also restores optimum performance level. Easy-to-use, simple 2-step Hearing Aid Ear Piece Cleaning: 1) Guide & insert threader into the vent, tubing, or canal 2) Pull soft, spongy brush through. Product dimensions (imperial): 1 inch H x 4.6 inch L x 2 inch W Product dimensions (metric): 25.40 mm H x 116.84 mm L x 50.80 mm W