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The Jaw Coupling Insert Bronze FC12 from Boston Gear is an excellent choice for high-torque loads, particularly at slower speeds. This versatile coupler is made of durable bronze and features an oil-impregnated Bost-Bronz spider for smooth performance in demanding environments. The 3-jaw insert design comes complete with a keyway and set screw for easy installation. It requires no lubrication and can handle temperatures ranging from -60 to 250F (-51 to 121C). The Jaw Coupling Insert is ideal for use in power transmission applications, providing exceptional torque capacity and stability. Its sturdy construction ensures long-lasting performance, making it an excellent investment for businesses and industries that require reliable power transmission components.