You should consider that they aren't "drilling" a hole - they are "grinding" a hole

the tool can be used for layout

200 strokes per minute for professionals working with a range of materials from hardwood

Hologram-free polishing

Unlimited power

Unimig Ceriated Tungsten Grey 1.6Mm Qty 10 Ptr0003-16 Inspection Mirror You should consider that theyThe Ceriated Tungsten Electrodes (AWS & ISO classification EWCe 2) contain a minimum of 97. 3% tungsten and 1. 8% 2. 2% cerium and are commonly referred to as 2% ceriated. Runs best on DC with low amperage settings Excellent arc starts at low amperages Great arc stability Good arc re ignition