General description Lasts up to 50 times longer than the Bosch 2608900445 Hole Saw in tough materials. The Bosch EXPERT 9pc Tough Multi Material Hole Saw Set is designed for exceptional durability with Bosch Carbide Technology, making it ideal for electricians and plumbers. This set is perfect for cutting neat holes up to 60 mm in depth for various applications, including tubing for wires, fresh and waste water pipes, sockets, light switches, junction boxes, recessed lighting, fire alarms, presence detectors, and ducting for air circulation. Technical specifications Diameter: 22 mm, 25 mm, 35 mm, 51 mm, 60 mm, 68 mm Working length: 60 mm Other information Teeth made from very hard Carbide using the finest grains Individually shaped and sharpened for top performance Patent slot design for better view and plug ejection Hole layout aids in accurately positioning the guide drill and plug removal Each EXPERT accessory is backed by innovative Bosch Technology for optimal performance