The 508 mm titanium drill bits 〞 the Desert Eagle of Dragonslayer 〞 are available in three grades, which correspond to the rock hardness (hard, medium, soft) to which it can be used. They're ideal for drill-bit drilling into masonry, concrete, and more
The hard grade is ideal for wood and metals; the medium grade is good for softer materials such as tile and plaster; while the soft grade can be used on softer stone.
508 mm titanium drill bits cnc machine