330 Pcs Copper Washers Assortment Kit – 12 Sizes Flat Sealing Crush Washers (M5-M20) for Automotive, Plumbing, and Mechanical Use

Great Quality and Excellent Value! I’m really impressed with this 1100-piece flat washer assortment kit. The 304 stainless steel feels strong and durable — no rusting or bending like cheaper sets I’ve tried before. The variety of sizes (M2–M12) makes it perfect for all kinds of projects around the house, garage, and even light automotive work. The case is well organized, and each compartment is clearly labeled, which makes finding the right washer super easy. Overall, this set offers fantastic quality and value for the price. Definitely a must-have for anyone who works with screws and bolts regularly. Highly recommend!

Great variety of products here! Durable and well made.

This kit comes with everything I need and it still have more left. Great kit at a price you can beat. It is made of stainless steel. Fit over bolt. Work just like store brand. It come with a storage to keep everything organized.

IT's JUST hardware. What can one say? They are washers! SS metal. worked as designed. Last a long time and each cost less than a dime. Every home DIY kit should have one.

This copper washer kit is exactly what I’ve been needing for a while. It comes with a wide variety of sizes, and every single one I’ve used so far has fit perfectly—no leaks, no hassle. Whether I’m working on brake lines, oil drain plugs, or other small engine repairs, there’s always a washer in the kit that fits the job. The copper is high-quality and has a good thickness—not the kind that bends too easily or crushes unevenly. Everything came organized in a sturdy plastic case, which makes it easy to find the right size quickly. Honestly, if you’re a DIYer or mechanic, this kit is a no-brainer. Super convenient, reliable, and a great value for the price. I’ll definitely be grabbing another one when I run low.

Handy to have on hand

Only needed two, but the price of two at Napa was the same price this entire kit. The only thing that I will say about these that I don't love is the thickness. If you're using these as a crush washer for brake lines they work, but they certainly don't have the thickness that a typical crush washer would. I don't know if this will cause issues long-term but I thought it was worth mentioning.

This had every size of washer imagineable. It was actually too many, because once I opened the box, I couldn't get it shut again, I had to throw a lot of them away.

Good assessment. Far cheaper than buying at my local hardware store.

Perfect, as described and all sizes possibly needed.

Good washers. They come in many sizes and include a good storage box.

not to bad when you buy on dealer thickness not the same but ok 4 star