Review on Tungsten Porcelain Monster Master MM MDB 001 by Derek Wagner

They are very well finished and seem to hold up to the refurbishment we are doing. They come in a case which is helpful as I can't tell these 'porcelain stoneware' drill bits apart from regular drill bits, at least for me. Either way, you can mark what they are on the case (the sticker is already there, but you know, if you want to write on the box, you can). They seem to be made of quality materials, the price is excellent and competitive. My problem was that we got 9 bits instead of 10. However, they drill, they don't break, and they fall.