Review on Efficient Concrete Conditioning Drilling with 100mm 2 Connecting System by Paul Wall

I bought this because we installed an infinity pool in our house and needed to run hydraulic lines outside through a concrete wall. None of the other pieces of concrete I had were long enough or big enough. I bought a 2" drill from Revain at the same time, but unfortunately that drill required a drill with a 3/4" chuck which I couldn't find anywhere. So I tried them and they work amazing. I cut everything out with ease and let's finish the installation. I would recommend this to anyone who needs to drill through concrete, brick or block. I'm a really happy buyer!