Visible Dust Econo 1.6x Sensor Brush Cleaning Kit with 2 Sensor Brushes This kit is recommended for the following cameras: Canon D30, D60, 10D, 20D, 300D, Digital Rebel & XT. Konica-Minolta Maxxum 7D Nikon D1, D1x, D1h, D2h, D70 & D100 (D2x, D50 & D70s Can use either 1.6x or 1.3x) Fujifilm S2 Pro & S3 Pro. Pentax *ist D, *istDS & *istDL. Sigma SD9 & SD10 Olympus E Series Friction Resistant - using the proper technique during processing one can change the friction resistance of the brush fibers. Therefore determining how much residue is left on the sensor by various polymers. Neither of these processes will change the appearance of the brush. Curing - Is done to prevent the residual stain left behind with most polymers. This is achieved using high-temperature baking and/or chemical and radiation techniques. Fiber Thickness - Sensor Brush is made of the thinnest possible fibers. They are quite resilient in texture and several times thinner than a human hair and are 30-40% thinner than most consumer fibers. Flow thru - Sensor Brush is designed to have the optimal fiber density concentration allowing the dust crystals to pass through without resistance.