• This kit includes a Bosch Power Change adapter, a system designed to simplify and speed up the process of replacing hole saws and centering drills. • With this system, it is possible to quickly remove material cores and change tools without using any other instruments. • The Power Change system is recognized for its practicality and efficiency, allowing time savings with each use. • Long lifespan when drilling various materials. • High-speed steel with 8% cobalt for durability and excellent performance. • Bosch Power Change for efficiently removing material cores and changing hole saws. • The PRO Multi Material hole saw features an improved tooth design for fast and smooth cuts and HSS high cobalt alloy teeth for longevity. • It efficiently tackles steel coverings and drywall. • The Power Change Plus system allows for faster changes of hole saws and centering drills and makes it easier to remove material cores.