RK 428 KRO 136L O Ring Chain GoldRK 428KRO x 136L O Ring Chain Gold 'O' RING CHAIN Gold plates with natural finish chain rollers and pins. RK sealed O Ring chain features heat treated hi carbon alloy steel components with seamless rollers and shouldered busings. The O rings are made from advanced Nitrate Butadiene composite for maximum performance and wear life.
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