If you do your own oil changes, you know how important those little crush washers are - and this 50-pack of M16 copper gaskets means you'll never run out at the worst possible moment. These washers fit M16 drain plugs perfectly (that's 16mm inner diameter, 22mm outer diameter, and 1.4mm thick), and they work great with Honda, Triumph, Kawasaki, Suzuki, and plenty of other motorcycles and equipment. They're made from really high-quality copper - like 99.5% pure - which means they won't rust and they resist corrosion from oil and chemicals. Copper crush washers are awesome because they create a super tight seal when you tighten the drain plug, preventing leaks but still being easy to remove next time. They handle high temperatures and pressure like champs too. Having a big supply of these on hand is just smart - whether you're a DIY mechanic, run a shop, or just want to be prepared for your next oil change. Much cheaper than buying them individually from the dealer, and the quality is actually really good. Definitely a must-have for anyone who maintains their own vehicles!