“Tears through my metal doors like butter!”
I needed to install a peephole into my front door. As with most things, if I need one size, I usually go buy a whole set so I'm set for years and years to come, and this was the case this time.
Ridgid has a process of forming their cutting metals very strong, "CG Power is a state of the art technology for making metals stronger, creating a faster and more durable hole saw."
The set includes 3/4", 7/8", 1 1/8", 1 3/8", 1 1/2" 1 3/4", 2", 2 1/4", 2 1/2" Bi-Metal Hole Saws, Two Mandrels and Two Pilot Drills in a Heavy-Duty Case.
My doors are metal with insulation in the middle, and this hole saw kit had no problem tearing through it and making a nice, clean, perfect circle.
For the strength and durability of these hole saws as well as the versatility of the hole set, I highly recommend these to anyone. Being a former locksmith apprentice who looks to go back into the trade in the future, these will earn me far more than what I spent on them!