Three new distinctive trimmer line choices are debuting under the Silver Streak brand: The Core, The Fire and The Edge. Each trimmer line has new and improved labeling and packaging, a new multi-spoke design spool for additional strength, and netting to prevent the line from unraveling. The Core is durable, with a dual core and round shape—less line is used and less time is spent loading the trimmer head. The Fire is an efficient red, round shaped line, manufactured with a proven formula of durable copolymer. The Edge is a hexagonal-shaped green line, with six cutting edges that leave a professional finish and a healthier lawn.

Stens.com