Building or upgrading a PC? These little thumb screws are a game-changer for your case panels. They're M4 size with a 10mm thread length, and the total length including the head is about 20mm. The best part is the knurled, oversized head – you can tighten or loosen them completely by hand, no screwdriver needed! Made from aluminum alloy, they're lightweight but sturdy. The royal blue color adds a cool, custom accent to your build (they come in other colors too if you look). They're called 'shoulder type' screws, which means they stay in the panel even when loose, so you won't drop them. Perfect for securing side panels, drive bays, or other case components you need to access frequently. This pack gives you 10 screws, which is usually more than enough for a standard build. They provide a clean, professional look and make hardware tinkering way more convenient. Just thread them in by hand until snug – it's that easy. A simple upgrade that makes your PC building experience smoother.