I bought this for a mechanism i was designing. It has way more springs than I needed.I wish it came with spring constant data. I had to measure it myself.Needed a spring and it came in this. I measured the spring 23/64 by a 1-3/8in from the others on the RC and this had it. Fit perfect. Now I have a box of 199 various springs that I may or may not use. I have 9 more for my boys RC as well. Well worth it.Yes springs arrived. Used two immediately and they are springy. smile. The plastic box was a bit of a struggle to close again as the left side catch did not wish to do it's job. Fiddled with it and got it done. basically i'm happy.Decent amount for the money.It needs smaller springs but all and all it’s worth it.Great price for what I needed. Wide range of spring options are nice, but I'll have a lot of waste for springs that I'll probably never use. Would be nice if the buyers had several options for springs at this price range instead of the one "mix".In other words, divide the type of spring into two, with a variety of all sizes for both.I love it l used it on my lawnmowerThank youThese appear to be metric washers that have been marketed as SAE. For instance, the washers represented as 1/2 inch are actually 0.512 I.d. This corresponds much more closely to 13 mm than to 1/2”. They are too loose to seal on a half inch bolt. AVOID,Aunque no son una herramienta escencial,sirven mucho como repuesto para proyectos, reparaciones o juguetes que requieran este tipo de funcioanlidad, tanto en extension como en compresion, su calidad precio es muy recomendable.The assortment of sizes are there, but the washers are so thin, you can bend the large ones with your fingers. They are just too thin of steel to be really useful for HD items. Maybe inside the house to repair an appliance, but not outside use on a vehicle or mower or...It could use a few longer tension springs and maybe some slightly stronger compression springs but overall seems to be good for fixing things with.Good little assortment of small fridge springs for a little projects around the house. The quality of the spring seems good so far for what we've used them forTraen suficientes para cualquier medida, en algunas no son exactas en cuestion al contorno de las originales pero encajan sin problemas!