Review on Optimized Installation Mortiser Template - Ryobi A99HT3 by Dwayne Quarles

Apparently this product is intended for wooden doors with smooth side walls. I got this product to work on my steel skin exterior door but only after changing the fixing. And even with the modification, I was only able to cut out the square pattern, not the rounded pattern, to match the existing hinges. However, it's a great tool with all the necessary accessories to get the job done easily (on a wooden door).