> I have 3 or 4 large bit sets --- all the small bits are missing, they've broken over the years. Individual small bits are expensive (unless you want a dozen of the same size) - so really appreciate an inexpensive set (I paid $3.88) of these small bits. > These are general purpose bits (metal or wood) for holes. from 1/16" to 1/4" They are NOT suitable for masonry etc. You can drill holes in soft plasterboard, but the drill bits will dull quickly. For brick, masonry, tiles, concrete etc. you will need masonry drill bits and ideally a hammer drill. RECOMMENDATIONS> TO AVOID BREAKAGE: When drilling through thick metal, leave a drop of oil in the hole. The oil makes cutting easier and also helps cool the bit (important). When drilling deep holes in metal or even hard wood, cut a little at a time, retract a few seconds (removing chips from the hole), cut a little more, retract, cut a little more, etc. If you think the drill bit is getting hot, just pull it out of the hole and let it cool for a few seconds - maybe put some oil on the bit to cool it down. Be careful when touching the drill to check how hot it is - a hot drill can cause severe burns. DO NOT use water to cool a hot drill bit - this can cause it to cool too quickly and become too brittle. > Let the drill bit cut - DO NOT push hard when using small drill bits. In fact, sometimes you need to pull back to keep a sharp cutter from cutting (and jamming) too quickly. Drill at MUCH less than maximum speed. When drilling in metal, the drill will drill at a slower speed than the maximum speed. > When purchasing your first drill set that will work with your first power drill, consider purchasing a larger drill set (up to 1/2 inch). Larger bit sets cost only a few dollars more, but a bit larger than 1/4 inch is unlikely to ever break or dull. Eventually you will break a few smaller sizes (i.e. exact position, make a pilot hole first with a smaller drill bit (about 1/4 the size of the last hole). DO NOT try to increase the hole size one size at a time. 3 RELIABLE WAYS NOT TO BREAK THE DRILL --> Drill bits can jam when cutting THIN hard sheet metal --- BE VERY careful Best to use a piece of mild steel or aluminum or even hardwood as a backing if possible --> Drill bits can jam and break when in use used to enlarge a hole slightly smaller --- try to cut the hole to size first, if you need to enlarge a slightly smaller hole, be very careful and only cut one small hole at a time - --> Drills are brittle and can break if you try to swing a stuck drill from side to side to loosen it If you have a reversible drill, ver seek to turn the drill counter-clockwise and SLOWLY pull the bit out. If that doesn't work, CAREFULLY remove the bit from the chuck, grasp it with pliers and try to pull it out by hand (ie turn it counter-clockwise). If that doesn't work, grasp the drill deeply with pliers and then pry it out with a screwdriver, etc. Sometimes just letting the drill cool for 15 minutes is enough and it will be much easier to open. These jams are usually caused by trying to drill too fast. > Don't worry if you break one, two or even three drills. This happens even to experienced workers. > Click 'Stoney' just below the product name to see my other reviews or leave a comment to ask a question.