Revolutionizing the way you reload trimmer line. With a unique disk that simply pops into place, you can replace trimmer line in as little as 20 seconds. The innovative tongue-and-groove disk replaces the usual tangle of trimmer line and lasts up to twice as long as the typical line. Which means you�ll spend more time on the job and less time reloading line. It�s reloading, redefined. Includes 3 disks, .118"(3.0mm) Gauge, 18'(5.5m) length. Replacement disks simply pop into place, you can replace trimmer line in as little as 20 seconds! The compact size makes them easy to carry with you, saving valuble time when working big jobs. Used with Oregons 24-500 5" Professional Gator SpeedLoad replacement trimmer head. Tongue & Groove line profile creates sharp edges for cleaner and faster cutting. Up to 2X longer life. Breakthrough formulation combined with a patented heat treatment process provides increased durability and strength, less wear andd reduced breakage.