
Bits are great value for money. This gives you more bits per set than your local hardware store. As for durability, they are excellent. Of course I only used them on plastic and wood. Haven't tried steel yet, but should be good. There are many beats to choose from. I highly recommend these beats. Has worked wonders for my purposes so far. Goes perfectly with my Dremel tool as well as a cheaper Amazon rotary tool. It can be assumed that they are suitable for other well-known brands and other brands.