The Hitachi 752173 (now branded as HiKOKI) Hole Saw Cassette is a professional 10-piece bi-metal set designed for versatile cutting applications. This durable kit includes hole saws with diameters ranging from 19mm to 76mm, suitable for materials such as wood, plastic, plasterboard, and non-ferrous metals. The set comes complete with two arbors for different size ranges and is housed in a robust storage cassette, ensuring organized and secure transport on job sites. Ideal for use with various power drills for construction and industrial tasks.