This SEIWEI chisel bit has held up surprisingly well through some tough demolition work. The 14mmx160mm size is versatile for various breaking tasks, and the pointed tip is aggressive enough to start cracks in concrete effectively. The chromium vanadium steel construction seems durable - I've used it for concrete removal and brick work without any signs of wear or damage. The HRC55 hardness rating appears accurate - it's maintained its edge through multiple uses. The SDS Plus shank fits securely in my hammer drill with no wobble or play. For the price, it's much better quality than I expected - some budget chisel bits can snap or dull quickly, but this one has proven reliable. If you need a basic demolition chisel for occasional concrete work, brick removal, or masonry tasks, this SEIWEI bit delivers solid performance without breaking the bank. Definitely recommend for DIYers or professionals needing affordable, reliable demolition tools.