Bi-metal HSS hole saw set is a versatile package suitable for both professionals and demanding hobby users. The set includes hole saws in sizes 22–114 mm, covering the most common needs in pipe work, penetrations, electrical and installation jobs. It includes both a large and small arbor as well as a 300 mm extension shaft, allowing work even in deeper and harder-to-reach areas. The bi-metal construction provides good durability and long service life, while the variable teeth cut efficiently into steel, aluminum, copper, brass, wood and plastic. Easy plug removal speeds up work and makes use smoother. The cutting depth of the hole saws is 38 mm, which is sufficient for most installation and construction applications.