For all you engineers, machinists, and DIY builders, these AUZHU quick release pins are absolute game-changers! Made from marine-grade 304 stainless steel, these babies can handle pretty much any environment - high humidity, outdoor exposure, even food industry applications. The M25xL100mm size means 25mm pin diameter with 100mm clamping length, but they come in various sizes to meet different needs. The ball lock mechanism is brilliantly simple - just press the button and the two raised ball locks retract into the pin for easy installation and removal. Release the button, and they pop right back out to lock securely in place. The handle is aluminum alloy with an electroplated black finish that looks professional and provides a comfortable grip. Each pin comes with an anti-loss cord so you don't misplace them during projects. These are perfect for factory automation, manufacturing equipment, electronic assemblies, marine applications, military gear - anywhere you need reliable, repeatable positioning and quick disassembly. The precision machining means consistent performance and perfect fit every time. The stainless steel construction resists corrosion, wear, and deformation even under heavy use. Whether you're building custom machinery, maintaining industrial equipment, or working on precision projects, these quick release pins provide that perfect balance of security and convenience. The metric sizing makes them ideal for international projects or anyone working with millimeter measurements. Seriously, if you're tired of struggling with difficult-to-remove pins or dealing with corrosion issues, upgrading to these stainless steel quick release pins will make your work so much smoother and more efficient!