Lasts up to 2x longer than a standard HSS M3 hole saw due to 8% cobalt. Ideal for electricians and plumbers working on interior construction, this hole saw is designed for installing pipes, electrical boxes, and recessed lighting. It features an enhanced tooth design for fast and smooth cuts and high-cobalt HSS alloy teeth for durability. It offers effective hole sawing in steel cladding and drywall. The Power Change plus system allows for faster changes of hole saws and pilot bits, and easier removal of material plugs. For use with hole saws with thread with a cutting depth of 44 mm. Tested in Bosch labs according to Bosch standard procedures. Features and Benefits: • Lasts up to 2x longer than a standard HSS M3 hole saw due to 8% cobalt • For use with hole saws with thread with a cutting depth of 44 mm • For cutting holes in a variety of common construction and interior materials, e.g. wood, drywall, GFK and metals • Highly efficient for electricians and plumbers: Long Life Specifications: Diameter mm: 168 Working length mm: 44