Review on Monster SCB0038D 8 Inch Diamond Non Core by Victor Rodriguez

My granite meter installer broke a diamond drill bit for my faucet and another drill bit for my fiber optic switch. He never returned. I was very scared to drill my $5,000 meter but I tried. I was amazed at how well these two bits worked. Both the 1 3/8" core bit and the 3/8" core bit drilled through 1 1/4" thick granite in less than 60 seconds. I was and still am very satisfied. I don't mind these bits to recommend.