3M Flange Adapter, black, 1 in x 1 in x 1/2 in (25.4 mm x 25.4 mm x 12.7 mm) 3M Flange Adapter is an adapter designed to reduce 1 inch (2.54 cm) internal diameter core size, flange size or wheel size to fit shafts that are smaller than 1 inch (2.54 cm) in diameterThis item is a stamped and formed sheet metal product that fits 5 to 8 in (12.70 to 20.32 cm) diameter 3M Flap Wheels. Product Information Brand 3M Part # 7000144596 Origin Country USA Product Type Flanges Extra Product Information3M Flange Adapters are metal products used to reduce an internal diameter core size to a smaller size.Product InformationAdapters work easily with most tools, and are used most commonly with hand and bench motorsAdapts a 1 in (2.54 cm) wheel core to fit various sized shafts smaller than 1 in (2.54 cm)Conveniently adapts flap wheels, deburring wheels, and unitized wheels with a 1 in (2.54 cm) centre hole