Complete rubbish Not a newbie to instrument playing and didn't have high hopes for this set.I was in a dilemma with the Christmas product I was releasing.I was trying not to run all over town looking for the 1/.8 radius -Bits in this set (crucial to the product I was making.) The bit they needed to replace had thousands upon thousands of linear feet and was in dire need of replacement, so I took a chance and re-ordered these without it expecting just to get through the holidays but delivery was on time I changed the bits and set up my table, the wood literally rolled over the top of the spinning bit on a test cut, some adjustments to put more pressure on the wood , and it still just rolled over the top of the bit, leaving a torn and uneven bit res. I pulled the piece out of the trash, put it back in, and threw the whole set away. Save yourself the hassle and find the best set. "Cry now or cry later." Again, I should have known better, but I figured it would be at least a week or so. Complete junk, useless even as a paperweight.