The Tool Desk
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How to choose a corded grass trimmer
Match cutting width and power to the job
Cutting width indicates the swath a trimmer is designed to cover, while motor power is a specification—not a guarantee of how well it cuts a particular type of grass. For occasional touch-ups, a narrower model may be easier to guide in tight areas. A wider cutting path can cover more ground per pass on open borders, but still needs to be manageable around beds, posts, and paving.
Compare like units and regions carefully. BLACK+DECKER’s Canadian catalog lists the BESTA510 at 14 inches and 6.5 amps, and the BEST935 at 13 inches and 4 amps. Those catalog figures identify the models and their stated specifications; they are not evidence of one model’s performance advantage. BLACK+DECKER Canada’s trimmer catalog (accessed 2026) also lists GH900 (6.5 amps, 14 inches), GH3000 (7.5 amps, 14 inches), and ST7700 (4.4 amps, 13 inches).
Check reach and power access
A corded tool needs a suitable outdoor power source, and the trimmer’s cord length affects how far you can work before managing an extension lead. Flymo lists a 12 m cord for the UK Contour XT. Check the exact model’s supplied-cord specification and owner’s manual, and plan a safe route that keeps the cable clear of the cutting head and your working path.
#1 Best Overall
- EASYFEED of the edger/trimmer allows you to advance your line with the push of a button with no bumping required
- The 6.5 amp motor and POWERDRIVE Transmission of the grass cutter provide maximum performance when trimming through the toughest weeds, grass, and overgrowth
- 2-in-1 Trim or Edge with wheeled edge guide - just rotate to convert from lawn trimmer to wheeled edger
- Lightweight design with adjustable handle and height positions provide maximum comfort and control
- Cord retention system prevents accidental cord disconnection
Choose the edging arrangement and line feed
Edging features vary. A guide wheel can help follow a path or border; a plant guard can help keep the line away from plants; and a convertible trimmer/edger design allows a change in working orientation. Automatic line feed is convenient, but line diameter and compatible replacement spools matter too. Confirm consumables against the manual for the precise model rather than assuming that line or a spool fits across a brand’s range.
Consider handling and noise specifications
Weight, secondary-handle adjustment, and the balance of the tool influence control during repeated passes. Flymo lists its Contour XT at 2.76 kg. It also specifies 92 dB(A) guaranteed sound power, 81 dB(A) operator-ear sound pressure, and maximum vibration of 5.14 m/s²; these are distinct manufacturer measurements, not comparative results. BLACK+DECKER lists an adjustable secondary handle for the GL7033-XK.
Rank #2
- POWER THROUGH YARDWORK with a durable 4 Amp motor
- QUICK TRIMMING AND EDGING: Get the job done quickly with a 13 in. cutting swath and auto feed
- LIGHTWEIGHT AND COMFORTABLE USE with built-in auxiliary handle
- Includes: (1) Best935 String trimmer (1) AF-100 Spool
- 2 Year Limited Warranty
Manufacturer-listed models to consider
These options illustrate different combinations of width, feed, and edging features. They are not a performance ranking. Confirm local model availability, price, warranty terms, cord details, and manual requirements before purchase.
| Model and source region | Published specifications | Edging and feed details | What to verify |
|---|---|---|---|
| BLACK+DECKER BESTA510 Canada catalog |
14-inch cutting width; 6.5 amp | Catalog identifies it as an AFS electric string trimmer/edger. | Current availability in your country, cord details, and line/spool compatibility in the manual. |
| BLACK+DECKER BEST935 Canada catalog |
13-inch cutting width; 4 amp | Not stated in the cited catalog entry. | Edging and feed features, cord details, local availability, and compatible consumables. |
| Flymo Contour XT (966952301) UK listing |
300 W; 25 cm cutting width; 1.5 mm line; 12 m cord; 2.76 kg product weight | 2-in-1 trimmer/edger; guiding edging wheel, twin automatic line feed, and plant guard. | UK-specific availability and manual instructions for cord use and replacement line. |
| BLACK+DECKER GL7033-XK Global/UK page |
700 W; 33 cm cutting width | Automatic single-line feed, edging guide wheel, and adjustable secondary handle. | Local availability, cord specification, line compatibility, and warranty terms. Manufacturer page lists a two-year warranty. |
Sources: BLACK+DECKER Canada catalog (accessed 2026); Flymo Contour XT UK product page (accessed 2026); BLACK+DECKER GL7033-XK product page.
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Quick Recap
Best Value
- Multi-Function Convenience: Easily switch between mowing, trimming, and edging for three-in-one versatility with your string trimmer
- Powerful Cutting Performance: The 6.5 amp motor with POWERDRIVE Transmission delivers top results when tackling tough weeds and thick grass using your electric weed eater
- Continuous Operation: Automatic Feed Spool (AFS) system allows uninterrupted work without bumping or manual adjustments, keeping your grass cutter efficient
- Ideal for Small Lawns: Designed for compact spaces with a 12-inch cutting width, 1.6-inch cutting height, and speeds up to 8000 RPM, this grass trimmer is built for precision
- Comfort and Control: Lightweight construction with adjustable handle and height positions ensures maximum comfort during use
Rank #4
- QUICKLY SWITCH FROM TRIMMING TO EDGING with turn-to-edge feature and wire edge guide
- NO BUMPING REQUIRED: Automatic feed spool extends the line without the need to tap the ground
- WIDE CUT RADIUS: 12 in. cutting swatch with 0.065 in. line
- VERSATRACK COMPATIBLE: Use the integrated hook to hang this tool directly on the VERSATRACK Wall Organization System (sold separately)
Rank #3
- HIGH PERFORMANCE: High performance 6.5 Amp motor of the weed wacker helps to tackle tough overgrowth
- PUSH BUTTON FEED SYSTEM: This edger/trimmer allows you to control the 0.065-inch line with the push of a button
- EDGE CAPABILITY: The grass cutter allows users to quickly change from trimming to edging
- EFFICIENCY: 14-inch cutting swath allows for added efficiency
- ADJUSTABLE: Ergonomic adjustable length pole to fit your height
Which type is the better fit?
- For straightforward edging on paths: look for a guide wheel or an explicit trimmer-to-edger conversion. Both the Flymo Contour XT and GL7033-XK list a guiding wheel; Flymo also describes its product as a 2-in-1 trimmer and edger.
- For borders near plants: a plant guard is a useful feature to consider; Flymo lists one on the Contour XT.
- For broad routine passes: compare cutting widths, while treating them as coverage specifications rather than proof of speed or cut quality. The GL7033-XK is listed at 33 cm; the BESTA510 at 14 inches.
- For fewer pauses to manage line: compare feed systems. Flymo lists twin automatic feed, while BLACK+DECKER lists automatic single-line feed on the GL7033-XK.
- For comfort over repeated use: check stated weight and handle adjustment, and if possible assess balance in person. The GL7033-XK page’s displayed weight is implausible and is therefore not included as a useful comparison.
Before buying or replacing line
- Confirm the complete model number and your region’s version; similar product names do not establish identical specifications.
- Read the owner’s manual for cord handling, line diameter, feed type, and replacement-spool compatibility.
- Check whether the listed cord length meets your work area’s needs and whether you have an appropriate outdoor power source.
- Verify current local availability, warranty terms, and price with the manufacturer or a local retailer; the cited listings do not establish current stock or price in every country.
- Use replacement line or spools only when the manual confirms compatibility. BLACK+DECKER’s Canadian catalog lists AF-100 replacement spools, but that listing alone does not establish compatibility with every trimmer.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
