Threlaco 20 Pcs Flail Mower Blade Flail Lawn Cutter Knives for Tractors Grass Cutting Scoop Cutters Compatible with Lawn Mower 907, 917

What It Is

This is a 20-piece set of flail mower blades (scoop cutters) designed for tractor-mounted or tow-behind flail mowers used in heavy grass, brush, and overgrown vegetation. They are intended as replacement or spare blades to restore cutting performance.

Fitment & Compatibility

Before buying, check:

• Deck fitment: Compatible with models that use standard Y-shaped or scoop-style flail blades with a 1/2” mounting hole. Not for zero-turn or push mower decks.
• Brand/model: Listed as compatible with Lawn Mower 907, 917—likely referring to specific flail mower models (verify your model number). Not a universal fit.
• OEM vs aftermarket: These are aftermarket replacements, not OEM. Measure your existing blade’s length, width, and hole diameter to confirm match.
• Mounting hardware: Blades only—no bolts, nuts, or hangers included. Check your existing hardware condition.

Key Things to Know

• Quality: 4.2/5 rating from only 3 reviews—limited feedback. May be thinner or less durable than OEM blades; inspect for consistent heat treatment.
• Installation: Moderate difficulty. Requires removing old blades, aligning new ones, and torquing bolts to spec. Use thread locker on bolts to prevent loosening.
• Common gotchas: Blades may need minor grinding to fit if hole alignment is off. Always replace in sets to maintain balance.
• Quantity: 20 blades cover most standard flail mowers (usually 20-24 blades per deck). Count your existing blades before ordering.

Should You Buy It

Buy this set if you need a budget-friendly, bulk replacement for a flail mower with 20 blades and you’re comfortable with aftermarket parts and moderate installation. Skip it if you require OEM-grade durability, have a different blade count, or want a proven brand with more reviews.