Power Bath, Tile and Grout Brush with Shower Track Brush and Long Reach Extension Green and Black Drillbrush bristle curvature is ideal for sink and tub corners 2 inch diameter brush with 1 3/8" long Nylon Bristles reaches into crevices and shower door tracks Kit includes two medium nylon brushes and a long reach, rotating sleeve, extension. Smaller diameter brush allows access to tight and hard to reach areas such as around bathroom fixtures and corners All Drillbrush Products have a 90 day no questions asked Money back Guarantee. If you are not completely satisfied with our product we will issue a full refund or ship out a replacement at the buyer's request. Cordless Drill NOT included.