Review on CTA Tools 2069 Oxygen Sensor by Mark Colbert

I purchased this tool elsewhere but it is exactly the same tool as pictured here, dimensions, markings, layout etc. Today I attempted to remove the upstream oxygen sensor on a 2005 Hyundai Tucson. ( slightly warmed up the engine and used the PB blaster) and with little effort the tool opened up and rounded the edges of the O2 sensor which should now make it twice as difficult to remove. Stay away from that plug, it's cheap pot metal that's not hardened at all. Also note that it's probably closer to 23mm due to the large gap between it and the O2 sensor to begin with. Why do people have to sell this junk? days? The same tool on ebay costs about $5 and isn't even worth THAT.