Metal grass trimmer blades can help cut dense weeds and brush when a compatible trimmer is designed for a blade attachment. For a large replacement supply, consider the 12-piece Generic set; for 20 one-piece blades, consider UMONIE. Lasnten offers 16 blades, while lycss and PTAHAN each provide an eight-blade set. Check your trimmer’s manual and blade mounting measurements before choosing: blade diameter alone does not confirm compatibility.
| Product | Best For | Set Size | Key Fit Detail |
|---|---|---|---|
| Generic 12-Piece Set | Mixed blade types | 12 | 5 mm mounting hole |
| UMONIE Metal Blades | Larger replacement supply | 20 | About 5.9-inch diameter |
| Lasnten Metal Blades | Spare blades with storage | 16 | 15 cm stated length |
| lycss Multi-Fit Blades | Thick weeds and woody stems | 8 | Confirm mounting fit |
| PTAHAN Metal Set | Cordless trimmer owners | 8 | Check mounting-hole match |
Generic 12-Piece Mixed Blade Set
This set includes four manganese steel saw blades and eight stainless steel blades. The combination gives buyers two blade material types in one package, and the stated 5 mm mounting hole provides a specific measurement to compare against a trimmer’s attachment requirements.
Best for: Buyers who want a larger supply and more than one blade type for compatible equipment. It was selected for its clearly stated mounting-hole size and mixed material assortment.
Check before buying: The listing says the blades suit most mower specifications, but users still need to verify the mounting hole and blade dimensions against their exact model.
UMONIE 20-Piece Metal Blade Set
UMONIE’s set contains 20 one-piece metal blades measuring 150 mm, or about 5.9 inches, in diameter. The product description positions them for compatible mowers, grass trimmers, brush cutters, and yard edgers, as well as residential and small-scale farm maintenance.
Best for: Users who want many matching replacement blades on hand. The quantity and stated diameter make this a practical option for planned repeat replacements.
Check before buying: The description refers to standard trimmer and mower requirements but does not provide a mounting-hole measurement. Confirm the arbor and attachment design before purchase.
Lasnten 16-Piece Metal Saw Blades
Lasnten supplies 16 one-piece metal replacement blades in a transparent storage box. The listed standard length is 15 cm. The product description also identifies corrosion, acid, alkali, and wear resistance as material qualities and describes the blades for home gardening, agriculture, and livestock-farm maintenance.
Best for: Buyers seeking a sizeable stock of replacements with a storage container. It was selected for its 16-piece count and clearly stated blade length.
Check before buying: A stated length does not establish that the blade fits a particular trimmer. Verify the attachment and mounting dimensions required by the equipment manufacturer.
lycss Eight-Pack Serrated Blades
These eight metal blades have serrated edges intended to cut thick weeds and woody stems. The listing describes the steel as high-strength and says the edges resist wear and corrosion. A serrated profile is the key distinction from a flat blade in this group.
Best for: Users looking for a serrated option for tougher vegetation, provided their equipment accepts this blade style. The set includes spares for multiple replacements.
Check before buying: The supplied product details do not specify a mounting-hole size or blade diameter. Confirm those measurements and the trimmer’s approved attachment type first.
PTAHAN Eight-Piece Metal Blade Set
PTAHAN’s set contains eight metal saw blades. Its product description says the blades have a standard mounting hole intended for most popular cordless string trimmers, and describes them for cutting tough weeds, brush, and hard branches.
Best for: Owners of cordless trimmers who have confirmed that their model accepts a compatible metal blade. The eight-piece quantity and saw-blade design suit buyers who want replacement stock for yard work.
Check before buying: “Fits most” does not mean universal fit. The listing details provided do not state the hole diameter, so compare the blade dimensions with the equipment manual.
Buying Guide: How To Choose A Grass Trimmer Metal Blade
Will the blade fit your trimmer?
Start with the trimmer manual, not just the blade description. Check whether the equipment is designed for a metal blade, then compare the required mounting-hole or arbor size, blade diameter, and attachment method. A blade that physically attaches may still be unsuitable if the manufacturer does not approve that type.
What blade shape suits the vegetation?
Saw-style or serrated blades are marketed for tougher weeds and brush. A different edge or blade construction may suit lighter vegetation, but the product information here does not establish a universal cutting-performance ranking. Choose based on the vegetation and the blade types approved for your machine.
How many replacement blades do you need?
Choose a smaller set if you need a few replacements, or a larger set if you maintain multiple compatible tools or want spares. Compare quantity alongside fit: a 20-piece set is not useful if its dimensions do not match your trimmer.
What safety steps matter?
Metal blades can create hazards from contact and thrown debris. Follow the tool manufacturer’s instructions, use the required guard and protective equipment, and inspect the blade and attachment before use. Do not use a damaged blade or install a metal blade on equipment that is not designed for one.
Frequently Asked Questions
Can I put a metal blade on any string trimmer?
No. Use a metal blade only when the trimmer manufacturer approves that attachment and the blade matches the required mounting dimensions.
Is a 5.9-inch blade compatible with a 6-inch trimmer?
Diameter alone cannot confirm compatibility. Check the mounting hole, attachment design, and manufacturer specifications as well.
Are serrated blades better for thick weeds?
The lycss listing describes its serrated edge for thick weeds and woody stems. Actual suitability also depends on the trimmer, vegetation, and approved blade setup.
How do I know which blade size to buy?
Consult the equipment manual for the permitted blade diameter and mounting measurements, then compare those specifications with the product details.
Should I keep spare blades?
Spare blades can reduce the need to source replacements later, but only buy a set whose blade type and dimensions match your equipment.