I use extra long bits for a range of woodworking jobs including drilling starting holes in vases, lamps and flutes. Most cheap imported solid head drill bits I've seen are poorly shaped and not very sharp, including some well known brand name drill bits I've bought. However, they are well formed, very straight, and have sharp cutting edges throughout their length. The tips may not be as well formed as more expensive drill bits, but they work well enough for my purposes.