Best String Trimmers · head-to-head
DeWalt DCST972 FLEXVOLT 60V MAX 17" Brushless String Trimmer vs Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer
A sourced, side-by-side spec comparison. Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer is cheaper at $159. Every spec and price links to its source.
Side by side
| DeWalt DCST972 FLEXVOLT 60V MAX 17" Brushless String Trimmer | Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer | |
|---|---|---|
| US price | $329 (MSRP, DCST972X1 kit; FLEXVOLT DCB609 battery (9.0Ah in 20V mode, 3.0Ah in 60V mode) + charger. Product now marked discontinued on DeWalt.com) | $159 (Kit price with 4.0Ah battery and charger per Home Depot/ToolBoxBuzz; HD tool-only listed ~$179) |
| Brand | DeWalt | Ryobi |
| Released | 2021 | — |
| power source | battery | battery |
| cutting swath in | 17 in | 15 in |
| shaft type | straight | straight |
| line diameter in | 0.080 in | 0.080 in |
| feed type | bump | bump |
| engine cc or voltage | 60 V | 40 V |
| weight lb | 10.3 | 8.92 |
| release year | 2021 | — |
Sources — DeWalt DCST972 FLEXVOLT 60V MAX 17" Brushless String Trimmer: dewalt.com (verified 2026-06-19). Ryobi RY40250 40V Expand-It Attachment Capable String Trimmer: ryobitools.com (verified 2026-06-19).