Looking for some tough, reliable safety wire for your project? This is the classic Malin brand stainless steel safety wire, and you get two spools in this pack. The wire diameter is 0.041 inches, which is a super common size used all over the place – think aviation, motorsports (for securing bolts on things like oil drain plugs, caliper bolts, etc.), or any industrial application where you need to lock nuts and bolts so they can’t vibrate loose. Each spool is 221 feet long, so you’ve got plenty to work with. It comes in those handy blue plastic canisters that keep it organized and easy to dispense. Stainless steel means it’s corrosion-resistant and strong. Whether you’re a professional mechanic, a race car builder, or a serious DIYer, having good safety wire on hand is a must. This two-pack is great value and ensures you won’t run out mid-job.