It is bad enough that you have to take time out from your genealogy to clean house, let alone your computer, so we came up with this wonderful little brush that will help you. It will be great dusting out the depths of the keyboard of the computer or dusting off the screen of your monitor or use it on a multitude of other items. It is retractable so that the bristles tuck neatly away in a very durable plastic case. It is adorned with the words "Genealogy. Chasing your own Tale!" Oh, how true it is! We know you'll love this one! Measurements: 4" long x 1-1/4" wide.