Progressor tooth design cuts faster and lasts longer in wood and metal applications. Reinforced shoulder for added strength and longer life. 8 percent cobalt alloy for longer life and higher heat resistance. Works with standard or Quick Change mandrels (Quick Change requires adapters).
Industrial and Scientific Bosch HB250 2 1 Bi-Metal Hole saw is simply amazing and it definitely holds up to the Bosch name. This tool can cut through thick metals without any difficulties. Its strong and sharp precision teeth find the right place and dig through easily. The BI-METAL construction also makes it highly durable and long-lasting .The only downside to it is the slightly high price tag, but it is completely worth every penny..
Pros
Durable and long-lasting due to the bi-metal material.
This bi-metal hole saw may work for professionals who have industrial-grade machines and experience in drilling large holes.However, based on our own experience it's terrible for DIY projects. We tried to install it on our hand drill, but it just couldn't cope with the material we were cutting, and the result was poor. The pros would be the brand reputation of Bosch for quality products. the cons are that this tool is not a good fit for non-industrial equipment and not very affordable for…
Pros
Durable and long-lasting
Cons
May need to be sharpened frequently for optimal performance
Did the job of cutting a hole in my interior wall and exterior trim but was too tedious to make another hole after one use. I only need this for one hole so that was fine with me but you can look for something more permanent for reuse.