Alocs 21560070 Trimmer Head Replacement for Echo Echomatic SRM210 SRM225 SRM230 SRM235 SRM2100 Straight Shaft Trimmers, Replaces Echo String Trimmer Parts 21560070 Weed Wacker Head

What It Is

The Alocs 21560070 is an aftermarket bump-feed trimmer head designed to replace the OEM Echo part 21560070 on Echo straight-shaft trimmers. It holds up to 0.095-inch diameter trimmer line and is meant for residential trimming of grass and light weeds.

Fitment & Compatibility

• Exact models: Echo SRM210, SRM225, SRM230, SRM235, SRM2100 (straight shaft only). Also fits some Husqvarna and Ryobi straight-shaft trimmers using the same mounting system.
• What to check before buying: Confirm your trimmer has a straight shaft (not curved). Measure the output shaft diameter – this head fits 10mm (0.394″) shafts with a standard threaded bump knob. Verify your current head is a genuine Echo 21560070 or a direct OEM replacement. This head uses a 3-prong locking system; if your trimmer has a different mount (e.g., speed-feed or universal), it won’t work.
• Line capacity: Accepts 0.080″ to 0.095″ line. Do not use thicker line—it will jam or break the head.

Key Things to Know

• Installation difficulty: Easy. No tools required for line loading; the head snaps open and closed. For mounting, use the supplied wrench to hold the shaft while tightening.
• Quality vs OEM: The Alocs head is plastic with a metal eyelet. It’s lighter than Echo’s OEM head, which may reduce vibration but can feel less durable under heavy use. Several users report the bump-feed mechanism jams if line is loaded unevenly.
• Common gotcha: The pre-wound line spool included is often underfilled. Plan to re-spool with your own line immediately for best performance.
• Warranty: No manufacturer warranty listed. Consider this a budget disposable part.

Should You Buy It

If you have a compatible Echo straight-shaft trimmer and need a cheap, quick replacement for light residential trimming, this head works fine. Avoid it if you trim heavy brush or want a head that will last multiple seasons—spend more for an OEM Echo or a metal-composite head. The low price makes it a decent backup, but don’t expect professional-grade durability.