RENTH FR SPRO 520 STEEL ST 515U, 14, BLK 1126485002

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<p><strong>Product Description</strong><br>
Renthal front chain-wheels are simply the finest front chain-wheel on the market today. Our Front chain-wheels feature a specially developed nickel-chrome-molybdenum steel which is case hardened and core refined to give the ultimate combination of strength and hardness. Grooved chain-wheels have cut outs at the bottom of the tooth.</p>