Progressive Suspension (SWW-400 Safety Wire Winder Kit Kit includes 25 feet of .032 inch stainless steel wire, 18 safety washers (6, 8, 10mm thread size) and one Rapid Wire Winder An economical way to safety-wire nut and bolt heads, preventing them from loosening due to vibration and other forces Guarantees critical components will remain in place, ideal for racing applications The tabs on the washer fold up and grab the nut, then the washer is wired to a stationary object, no drilling required Great for aircraft, automobiles, motorcycles, personal watercraft and more