Eternal Tools คำวิจารณ์

Thanks for your great review! We'd love to have them made in larger sizes as well but due to the small shank and with the ability to use them in pendant drills and hobby rotary tools, the larger we go with drill size diameter, the more wobble we get when drilling.
If you do need a larger size core drill you can always use our standard diamond core drills in a regular household drill.

Hi Rupert, the small diamond twist drills are the correct drill bits to use on window glass, great for de-misting double glazing, that sort of thing.
We will email you directly with regards to the drill bits you bought, which are not intended for use on window glass.