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Niacron's 1/4-3/4 inch shrinking diameter range is an essential power tool and accessory for professionals who require precision fit tolerances. Carbide material ensures durability and long-lasting performance, making it suitable for heavy-duty applications. The first coil feature reduces insertion force while providing maximum gripping strength, enabling users to achieve a perfect fit in hard-to-reach locations without the need for additional tools or accessories. Shrink fitting reduces stress concentration and maintains accurate torque, ideal for automotive, industrial, and hardware applications alike.