Smart Spool


Shipping: $7.50 – 17.00 US ($15.00 – $34.00 Canada)
Additional charges for shipping will apply for Hawaii, Alaska and International. Please contact us for details.

New and Improved spool design!

We’ve taken the original spool and improved on the design… The Smart Spool!

Single Unit: $14.99
3 Pack: $39.99
5 Pack: $64.99
Single Unit + Trimmer Clip: $29.99
3 Pack + 3 Trimmer Clips: $82.99
5 Pack + 5 Trimmer Clips: $129.99

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Trimming & Edging done so much easier… check out the Darwin Grip at

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  • Speed Slot allows you to wind string faster than the traditional method
  • Gone are the days of having to cut and wind two pieces of string every time you need to re-string
  • String Lock slots allows you to securely lock string onto the spool without worrying that it may come loose while on your Trimmer Clip (sold here)
  • Spring Included with each spool
  • For use with STIHL 25-2 trimmer heads

Additional information


Single, 3 Pack, 5 Pack, Single / Trimmer Clip, 3 pack / 3 Trimmer Clip, 5 pack / 5 Trimmer Clip