Strimmer line size: what your strimmer takes
The right line is the size the manual gives for the head fitted to your trimmer. This page lists the 44 models sourced for the UK.
| Diameter | Models | Examples |
|---|---|---|
| 1.6 mm | 22 | RYOBI RY18LT33A, RYOBI RY18LT23A, RYOBI OLT1832, RYOBI RY18LTX33A, WORX WG163E, WORX WG157E |
| 2.0 mm | 11 | RYOBI RY36LT33A, EGO ST1300E-S, Einhell GE-CT 36/30 Li E, GARDENA PowerTrim 30/18V, STIHL FSA 60 R, STIHL FS 38 |
| 2.4 mm | 7 | EGO BCX3800, EGO ST1400E-ST, EGO ST1510E, Bosch AdvancedGrassCut 36V-33, STIHL FSA 60 R, STIHL FSA 80 R |
| Brand | Models | Sizes in our records |
|---|---|---|
| Bosch | 9 | 1.6 / 2.4 mm |
| EGO | 4 | 2.0 / 2.4 mm |
| Einhell | 5 | 1.6 / 2.0 mm |
| Flymo | 7 | 1.6 / 2.0 mm |
| GARDENA | 2 | 1.6 / 2.0 mm |
| Husqvarna | 2 | 2.0 / 2.4 mm |
| Makita | 2 | 1.6 / 2.0 mm |
| RYOBI | 5 | 1.6 / 2.0 mm |
| STIHL | 5 | 1.6 / 2.0 / 2.4 mm |
| WORX | 3 | 1.6 mm |
How to choose the right size
- Read the model name on the rating plate, not on the box or the battery.
- Identify the head fitted: factory spool, bump head or a replacement.
- Find the diameter the manual gives for that head, and its shape.
- Buy that size, or the replacement spool the manual names.
Thicker is not better. Line heavier than the head allows can jam the spool, overload the motor and wear the eyelet.
The diameter chart converts millimetres and inches, and the model lookup finds the record for your model.
Trimming season in the UK runs roughly from April to September; check your spare spool before it starts. Same model name, different product: regional versions can differ. Match the rating plate.