"The ASB-2 ion is a revolutionary static eliminating brush incorporating the world's only core-and-sheath composite conductive acrylic fiber 'COREBRID TMB' developed by Mitsubishi Chemical Corporation. Most antistatic brushes remove static electricity through corona discharge. However, brushing disc media to remove dust can often generate new floating static fields. The ASB-2 ion solves this problem with a final static eliminating punch â a built-in ionizer emitting a flow positive and negative ion, eliminating any static generated while brushing your disc media. The ASB-2âs built-in ionizer sends a flow of positive ions from the top of the brush handle when the lever is pressed and negative ions when the lever is released. The ASB-2 ion requires no batteries and can be used over and over again." - Furutech