I recently upgraded my front door lock with the Sonew 60mm Copper Dual Open Lock Cylinder, and I have to say, it feels like a fortress now. The weight of the copper immediately gives you confidence—no flimsy materials here.

Installation was straightforward, though I’d recommend watching a quick tutorial if you’re not familiar with lock cylinders. The keys slide in smoothly, and the turning action is buttery—no grinding or resistance. I’ve used it dozens of times already, and it hasn’t shown any signs of wear.

One thing to note: the return shipping cost mentioned in some reviews is wild ($300?!), so double-check your measurements before ordering. But honestly, if you get the right size, this lock cylinder is a steal for the quality. It’s noticeably more robust than my old one, and I sleep easier knowing it’s tougher to pick or force open.

My only gripe? The keys are a bit plain-looking—I’d love a more modern design. But hey, security over style, right? For anyone tired of jiggling keys or worrying about break-ins, this upgrade is worth every penny.