The BLACK + DECKER A6440 Nylon Strimmer Line on a spool. It is suitable for all Black + Decker Grass Trimmers with the Reflex Intelligent cutting system.
It fits the following Black + Decker models: GL315, GL337, GL350, GL650, GL660, GL670, GL651, GL652, GL653, GL655. GL656, GL687, and GL680.

Specifications:

Length: 25m.
Diameter: 1.6mm.