The DigitalDuster SLR Camera Cleaning Refill Kit with 24mm Wands from Delkin Devices is a complete kit to help you keep your sensor free from all kinds of debris. No matter how careful you are, at some point, your sensor will accumulate dust, dirt or some kind of small irritating particle that will contaminate your images. Simply by changing lenses, you expose your sensor to all sorts of contaminants. This kit includes all the necessary ingredients you need to minimize moisture stains and fixed particles. The kit is made up of wands, solution and a pen - all targeted towards maintaining peak sensor efficiency.