From the handy parts range, sp66 undulated line is designed specifically for cordless grass trimmers the line cuts faster with less demand on the machine, helping the battery to last longer for extended runtime per charge'. '.strtoupper('s')p66 has a patented raw material blend which is very hard wearing and has a higher melting point which eliminates welding in the head'. '.strtoupper('t')he unique shaping process provides an aerodynamic profile with less air resistance, less vibrations and reduced noise'. '.strtoupper('1').6mm version'. '.strtoupper('f')eatures benefits bull ideal for battery powered grass trimmers bull designed to help prolong battery runtime bull excellent aerodynamic properties bull a faster cut than traditional lines bull less effort required during cutting bull reduced decibel emission bull hard wearing bull superior resistance to abrasion and wear bull very stable and durable specifications bull line diameter 1.6mm bull line profile round bull line length 15 metres