Weiler 1 inch Nickel-Plated Cup Crimped Wire End Brush features a solid end construction and very flexible brushing action. ideal for more demanding light-duty cleaning applications in corners and hard-to-reach areas. 1/4 inch stem diameter for use on die grinder and right angle die grinders. Wire end brushes are for use on high-speed portable power tools for addressing smaller surfaces and recessed areas. End brushes feature an integral 1/4 inch steel stem for safe operation at high speed and quick mounting into the collet or chuck of either electric or pneumatic die grinders. End brushes are available in a variety of knot wire and crimped wire configurations for use in a broad range of applications, and they are manufactured with the highest quality construction for smooth, efficient performance and long life. Weiler's end brushes are available in heat-treated steel, Type 302 stainless steel, and bronze or brass wire. Made in the USA.