E & S 3 Pack Chain Saw Chain 20 Inch .050" Gauge 0.325" Pitch 80 Drive Links, for Husqvarna 581643680 Chain, Semi Chisel 20 Inch Chainsaw Chain for Husqvarna Stihl Craftsman Jonsered Chainsaw Etc.

Product description

• German Steel Durability Crafted from premium DIN-certified German steel (HRC 58-62) with 30 m industrial hard chrome plating resists abrasion from bark, ice, and grit. Lab-tested to retain sharpness through 10,000+ cuts on oak and maple, outperforming standard chains by 150% lifespan.
• Semi-Chisel Debris Defense Precision heat-treated semi-chisel teeth (quenched at 850 C) feature angled top plates and rounded edges self-cleaning design expels sawdust instantly. Proven to cut 30% faster in resinous pine and sand-embedded logs than full-chisel chains, with 90% less kickback risk.
• Multi-Brand Compatibility Includes laser-etched guide marks for foolproof installation. Perfectly fits gas electric chainsaw brands Husqvarna, Stihl, Echo, Makita, etc. Refer to our Model Mapping Table for detailed machine model information.
• Hardened Chrome Rivets Aerospace-grade carbon steel rivets with chrome-nickel coating endure 10,000 RPM stress. Field-tested in -20 C to 50 C conditions 80% less stretch after 8-hour logging sessions than standard chains.
• ANSI CSA Certified Safety Passed ANSI B175.1-2012 kickback tests ( 13 deflection angle) and CSA Z62.3 chain retention standards. Features patented anti-snap grooves and triple-reinforced tie straps to prevent chain derailment.