Hey DIYers and repair folks! These little compression springs might be small, but they're super useful for all kinds of projects. Made from 304 stainless steel that's corrosion resistant and really durable. Each spring has a 2mm outer diameter, 0.3mm wire thickness, and 30mm total length when fully extended. They compress down to about 18mm and can handle up to 3.9N of load with a spring rate of 0.33 N/mm. The ends are closed properly so they transfer force efficiently and don't get tangled up in your parts bin. You get 10 pieces in the pack, which is perfect because let's be real - springs have a way of disappearing at the worst times! Great for everything from small appliances and electronics to model projects, automotive applications, or custom mechanical designs. The silver finish looks clean and professional. These are the kind of components that seem insignificant until you need one, then you're super grateful you have them on hand. Whether you're fixing a retractable pen, building a small mechanism, or repairing household gadgets, having assorted springs around saves so many trips to the hardware store. The quality is solid - smooth appearance, even spacing, good elasticity. Keep a pack in your toolbox for those 'oh yeah, I need a spring for this' moments. Seriously handy to have around!