Parts 4 Outdoor 4" Polycut Replacement Blades 100-Pack for Stihl 6-3 Trimmer Heads — Polymer, Durable

If you maintain lawn and landscaping equipment, having a durable, easy-to-install supply of replacement Polycut blades keeps work moving without surprises. These aftermarket 4" blades work with a broad range of Stihl string trimmer models and specific trimmer heads, giving you a cost-effective way to refresh cutting performance for residential and light-commercial tasks.

Which Stihl models and trimmer heads do these Polycut blades fit?

These blades were designed to be compatible with many popular Stihl brushcutter and trimmer models and the 6-3 style trimmer head. Double-check your trimmer head style and part number before ordering to ensure a precise fit.

• Compatible Stihl models include FS55, FS56, FS70, FS80, FS90, FS94, FS110, FS130, KM55, KM56, KM90, KM94, KM110, KM130.
• Fits 6-3 style trimmer heads such as 4002 710 2176, 4002 710 2189, and OEM numbers like 99906-1566 and 385-744.
• Cross-replaces OEM numbers including 4111-007-1001, 531031067, 531030329, and others listed on packaging.

How long will each blade last and what are they made from?

These Polycut blades are manufactured to resist wear in typical vegetation trimming jobs; actual life depends on usage, terrain, and contact with hard surfaces. They are molded for toughness and designed to shed debris while maintaining an effective cutting edge during routine yard and roadside clearing.

• Durable polymer construction that balances flexibility and abrasion resistance.
• Molded shape intended to reduce breakage when striking light obstacles.
• Pack sizes let you replace blades frequently to maintain consistent cutting quality.

How do I install and store these replacement blades safely?

Installation is straightforward when you have a compatible 6-3 trimmer head: remove the head cap or spool, lay blades into the slots, and secure per your trimmer’s instructions. For storage, keep blades dry, away from direct sunlight, and in original packaging or a sealed container to prevent warping or contamination.

• Follow your trimmer manual for head disassembly and torque specs.
• Install blades evenly in the 6-3 head slots to preserve balance and reduce vibration.
• Store packs in a cool, dry place; don’t expose to solvents or high heat.

What purchase options, warranty, and returns are available?

Parts 4 Outdoor offers these Polycut blades in multiple pack counts to match usage needs, and all items ship from the USA. The company backs product satisfaction with a simple return process so you can buy with confidence.

• Available pack sizes: 25, 100, 250, and 500 blades depending on how often you need replacements.
• Manufactured and shipped in the United States for faster delivery and consistent quality control.
• 30-day no-hassle return policy: full refund if the product does not meet expectations.

Who is this for: Landscapers, groundskeepers, and homeowners who use Stihl trimmers with 6-3 heads and want an economical, reliable aftermarket blade option. Choose the 100-pack if you change blades regularly or maintain multiple machines and need a balance between inventory and value.