12Pack Metal Lawn Mower Saw Blade Head Replacement Saw Blades Lawn Mower Fittings Cordless with Battery and Charger Accessories,Universal Craftsman String Trimmer attachments

What It Is

This is a 12-pack of metal saw blade heads designed to replace the string head on a Craftsman string trimmer (or compatible universal trimmers). Intended for heavy brush, thick weeds, and small saplings—essentially converting a trimmer into a brush cutter for tough clearing jobs.

Fitment & Compatibility

Not for mower decks—this is a trimmer attachment, despite the listing category. Check these before buying:

• Shaft size: Most universal trimmer heads fit 0.080–0.105-inch line shafts, but this saw blade head typically requires a 10mm or 1-inch arbor. Measure your trimmer’s output shaft diameter.
• Mounting system: Craftsman trimmers often use a “speed-feed” or “tap-and-go” head. This replacement uses a central bolt and lock washer—ensure your trimmer has a standard threaded shaft (usually right-hand thread, but confirm).
• Brand/model: Listed as “Universal Craftsman,” but not all Craftsman trimmers are the same. Check your model number (e.g., 316.791xx) against the product’s compatibility notes. Avoid if your trimmer uses a proprietary head like “Auto-Feed” or “Rapid-Load.”
• Guard requirement: Metal blades require a brush cutter guard (not included). Your trimmer must accept one, or you’ll need to buy it separately.

Key Things to Know

• Quality: These are budget steel blades—thin and likely to dull fast in rocky or sandy soil. Fine for occasional light brush, not for daily commercial use.
• Installation: Simple bolt-on, but you’ll need a wrench and maybe a locking tool. No instructions included; check YouTube for “Craftsman saw blade head swap.”
• Gotcha: Without a brush cutter guard, using these is dangerous—debris can fly back at you. Also, the blade may not spin freely if your trimmer’s head is recessed.
• Battery/charger note: The listing mentions “Cordless with Battery and Charger Accessories”—ignore that. This is just the blades, no power tool included.

Should You Buy It

Buy this if you have a universal-string trimmer (not a dedicated brush cutter) and need a cheap, temporary solution for clearing heavy weeds or small saplings a few times a year. Skip it if you’re a pro, need durable steel for daily use, or don’t have a brush cutter guard—spend more on a single, thicker blade from a known brand like Oregon or Husqvarna for safety and longevity.