Dust cap Innovative dust cap, eliminates dust. Practical for indoor work, vacuum cleaner is not necessary as the dust cap seals tightly and retains the dust. The model is specially developed for Profit HM hole saws. It has a slightly longer and more flexible neck than similar products, which means that it closes tightly throughout the hole cutting process. Can be used with hole saws up to 120mm, can also be used with regular drills - Silcon construction, temperature resistant from -55 to 300° celcius - Nylon attachment against drill chuck withstands temperatures up to 220° - Can be used with Profit HM hole saws up to 120mm. Does not leave marks on the surface.