• The trimmer line is made of premium durable nylon, durable and cuts grass faster
• Allows lines to stretch and cushion impacts on hard surfaces, and the aerodynamic shape reduces drag
• The helical structure has better flexibility and durability
• The lawn mower spool line is 3.5mm in diameter and fits perfectly into the cord hole
• Compatible with Black & Decker GL680/GL685/GL690 Grass Trimmer

Specification:

• Nylon rope: 3.5mm square spiral
• Length: about 40cm±1cm