The Bosch quick change bi-metal hole saws feature Progressor? tooth geometry, combining cutting teeth with specially designed chip-removal teeth for super-fast cutting action in metal and wood. They work with mandrel models HSBAM, PCM38, PCM12 and PCMSDSPL. Hole saws 1-1/2 In. and larger can also be used with mandrel model HSBAMP.
Progressor? tooth design for faster cutting and longer life