This Draper Holesaw Arbor Adaptor is designed for use with Holesaw Arbors Stock Nos. 52982, 56387 and 56401 to adapt to larger holesaw sizes ranging from 32mm to 150mm. It is a professional tool, perfect for a variety of DIY and trade applications. The adaptor is compatible with holesaw sizes from 32mm to 150mm and is packed in a polybag for convenient storage. This product offers high quality and reliability, as expected from Draper tools.