Dull and doesn't heat well - used three wood dowel cutters and couldn't and couldn't get the job done. I didn't use all the tools and thought it was bullshit.
Pros
7 pcs. Triple point HSS countersink bits with good abrasion resistance and durability, including 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm for drilling pilot holes, large chip flute bit and five chamfers on the edges allow you to cut sawdust faster to remove and easier.