Review on ILOVETOOL Diamond 2 5Mm Drill Glass by Michael Walker

You are correct in the size information. It is often shown as 12mm-1/2". It's 1/2"-13mm. Thanks! One objection. Sometimes the core doesn't come out and this small side hole often gets covered by the core making it a bit difficult to pull out. I get at least 20 cuts in thick glass - 1/ 2" deep or more.