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A rock drill extension rod, as the name implies, is an additional shaft attached to a primary drill rod, designed to extend the drilling depth and range. It is primarily used with percussion or rotary rock drills, which are employed for drilling through hard and abrasive rock formations. These rods are made from high-strength materials like alloy steel, ensuring durability and resistance against the harsh conditions encountered in drilling applications.

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The top spin hammer drifter rod is characterized by its length, typically ranging from 6 to 10 feet, which allows for long, accurate casts. Its power and action are carefully balanced to manage the fight of larger fish while also maintaining enough sensitivity to detect subtle bites. The material composition of these rods often includes high-modulus graphite or composite materials, contributing to their lightweight nature and enhanced responsiveness.

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