Mxfans30pcs Diamond Glass Burr Bits Drill Carving Rotary Tool 2.5mm Dia Ball Point

I use these bits for drilling holes in the side of ceramic plant pots to stop them getting waterlogged. The bits are normally trashed after one pot, but the unit price on these is low enough not to matter and they seem to last as well as any other generic diamond burr I have used. Good item and enough supplied to last me years!

They wear out fear to easily when engraving slate, which is a soft stone. Wore out 3-4 on one engraving when I would normally only go through a half - 1. Wouldn't recommend for any serious engraver.

These are perfect. They cut through (wet) glass quickly and cleanly. They loose their cutting surface after a few runs, but I’ve used big name brands that have worn out before I’ve finished a single cut. I’m impressed with the quality fo these drills, especially for the bargain price.

Arrived on time. A little crudely finished, but nicely packaged in plastic box and did what I wanted. Very good value for money. I used them to engrave names on gin glasses as presents, all well received by the ladies.

Liked value for money but would prefere little stronger .

Wasnt course enough on the burr end the ball needs to be more gritty

Ideal for engraving on glass, wood, plastic and metal. I use the tips for glass engraving and find that they last very well.Order was quickly processed and promptly delivered.Well pleased.