Reddit reviews Damaged Screw Extractor Set(5 Pcs), Screw Remove Set, Easily Remove Stripped or Damaged Screws, Easy Out Screw Remover Tool Set, Made from H.S.S. 4341#, The Hardness Is 62-63HRC, Screw Remover Extract
We found 1 Reddit comments about Damaged Screw Extractor Set(5 Pcs), Screw Remove Set, Easily Remove Stripped or Damaged Screws, Easy Out Screw Remover Tool Set, Made from H.S.S. 4341#, The Hardness Is 62-63HRC, Screw Remover Extract. Here are the top ones, ranked by their Reddit score.
【MATERIAL & HARDNESS】: Made of genuine high-speed steel 4341 material, the hardness is 62-63HRC. Never soften even at high temperatures【EASY TO OPERATE】: Use a suitable size remover to drill a deep hole in the screw head and then reverse the screwdriver counterclockwise into the damaged screw until it is released.【EFFICIENT】: Our high hardness Damaged Screw Remover Set Tool, you can easily remove the rusty, broken, embedded, viscous screw in a few seconds.【APPLICABILITY】: screw extractor set works with any drill bit and any screw and bolt:Pan, Oval, H.W.H., H.W.F., CSK, Large wafer, Bugle, Truss, Pozi, Phill, Serra-tion, Flower Head, ideal for stripped, broken, stuck or damaged and removing screws. It is good for all homeowners, woodworkers, mechanics, artists, hobbyists etc.【5 PIECES】: The 5-Piece Set of Screw Extractor works with the most commonly used drill bit and any screw size. Extra # 0 for compatible your commonly used.
Considering where they drilled that hole, I don't see a problem with the frame.
An easy-out will probably back the broken bolt right out, and if it doesn't it can be drilled through easily enough. Or use Pclips on the seatstay to mount your rack. But the bike is fine, if you like it definitely don't ditch it.