Karbay 5 Pack 613223 Edger Blades Compatible with Ryobi, Ech

The Verdict

You know that moment when your edger blade hits a rock and you’re suddenly down $12 for a single piece of stamped steel? The Karbay 5-pack 613223 edger blades exist to make that sting hurt less. At 4.7 stars across 235 ratings, this is one of the most-purchased aftermarket edger blade options on Amazon. Here’s the real story after digging through the specs, the customer feedback, and the compatibility claims.

What You Actually Get

Five identical 613223-style edger blades, each measuring roughly 7 inches in diameter with a standard 20mm arbor hole and the classic 3-hole mounting pattern. These are drop-in replacements for the OEM part numbers used across Ryobi, Echo, Stihl, and Maruyama straight-shaft and curved-shaft trimmers. The blades are stamped from heat-treated carbon steel — not the flimsy stamped sheet metal you see on some no-name brands.

Real-World Performance

The cutting geometry matches OEM specs exactly, which matters more than most shoppers realize. A blade with slightly off-angle teeth will tear grass instead of slicing it, leaving ragged brown tips that scream “I edged my lawn yesterday.” Karbay’s blades have the same 5-tooth pattern and consistent angle as the factory versions. Multiple reviewers confirm the fit is precise: “Bolted right onto my Ryobi 18V trimmer, no wobble, no vibration,” one buyer noted. Another verified them on an Echo PAS-225, saying the holes lined up perfectly.

The steel quality is the standout feature here. These blades are noticeably stiffer than OEM replacements from some big-box brands. They hold an edge through normal grass and soil contact, and they survive the occasional concrete curb scrape without folding. One reviewer who runs a commercial landscaping route said, “I’ve put these through two months of daily use and they’re still cutting clean.”

What Buyers Consistently Praise

• Value per blade: At a 5-pack price, you’re paying roughly the cost of a single OEM blade per two replacements. Reviewers repeatedly mention this math.
• Universal fit: Confirmed working on Ryobi 18V and 40V trimmers, Echo PAS-225 and SRM-225, Stihl FS 90 and FS 111, plus Maruyama models. The 3-hole pattern covers the vast majority of edger attachments.
• Cut quality: Clean, even cuts on grass and turf edges. No tearing, no chatter marks.

Where It Falls Short

The honest downsides: These blades come with a bare steel finish. If you store them in a damp shed or garage, surface rust will develop within a few weeks. It doesn’t affect cutting performance, but it looks ugly and requires a quick wire-brush pass before use. A light coat of oil before storage solves this — but Karbay doesn’t tell you that in the packaging.

Also, you get zero installation hardware. No wrench, no arbor nut, no instructions beyond the compatibility list on the back. If your trimmer’s original nut is stripped or lost, you’re making a separate trip to the hardware store.

Who Should Buy These

The weekend homeowner who edges twice a month and is tired of paying $15 for a single blade at the local hardware store. The multi-tool owner with both Ryobi and Echo trimmers — one pack covers both. The light commercial user who burns through blades monthly and needs consistent, cheap replacements.

Skip these if you demand a coated, rust-proof blade for coastal or high-humidity environments, or if you need the absolute highest-end steel for daily commercial abuse on concrete-heavy jobs. For that, step up to carbide-tipped options.

FAQ

Will these fit my Ryobi 18V trimmer’s edger attachment? Yes, if it uses the standard 3-hole 20mm arbor pattern — which covers the vast majority of Ryobi, Echo, Stihl, and Maruyama models. Check your OEM part number; if it’s 613223, these are direct replacements.

Do I need any adapters or spacers? No. These are designed to bolt directly onto standard edger heads with the existing hardware. No shims, no bushings.

How long does one blade last? Typical homeowner use on soil and grass: 3-5 edging sessions before noticeable dulling. Rocky or concrete-heavy contact will shorten that. The 5-pack effectively gives you a season or more of blades.

The Verdict

Buy it if you want OEM-equivalent performance at a fraction of the price, value a 5-pack that covers multiple trimmer brands, and don’t mind wiping a little oil on bare steel before storage.

Skip it if you need rust-proof coating for humid climates or carbide-tipped durability for daily commercial use — those are different products at different price points.

At 4.6/5, the Karbay 5-pack earns its rating. It’s not flashy, but it’s honest: good steel, correct dimensions, and a price that makes replacing a dull blade a no-brainer instead of a budget decision. For most homeowners, this is the last edger blade pack you’ll need to buy this season.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.