Threlaco

What It Is

The Threlaco is a replacement blade for standard walk-behind lawn mowers. It’s designed for general grass cutting on residential lawns, not for mulching or bagging.

Fitment & Compatibility

Before buying, measure your current blade’s length (from tip to tip) and center hole diameter. The Threlaco fits most 20-22 inch deck mowers, but not all—check your mower’s brand and model number. It’s an aftermarket part, so it won’t match OEM specs exactly. Verify the blade’s thickness and offset (if your blade is curved). Cross-reference with your mower’s manual or existing blade part number.

Key Things to Know

• Quality is mixed—some users report it’s thinner than OEM blades, which may cause faster wear or vibration.
• Installation is straightforward (remove old blade, bolt on new one), but you’ll need a socket wrench and a blade removal tool or a block of wood.
• Common gotcha: the center hole may be slightly larger than some mower spindles, leading to wobble. Tighten to manufacturer torque specs (usually 30-40 ft-lbs).
• Not ideal for thick, wet grass—can clog or dull quickly.

Should You Buy It

If you need a cheap, temporary replacement for a standard walk-behind mower and don’t mind replacing it more often, this will work. Avoid if you want long-lasting, OEM-quality performance or have a specific brand (Honda, Toro) with tight tolerances.