The DWTET Series extension tap is specifically designed for tapping the hubs of pulleys, making it ideal for installing oil caps or set screws. Its extended shank allows access to holes that standard-length taps cannot reach, enhancing versatility in various applications. Crafted from high-speed steel, these tools are well-suited for general-purpose tasks, providing an excellent balance of hardness and toughness for superior wear resistance. The uncoated tools consist solely of the base substrate, making them versatile for a broad range of uses. They feature a round shape with a square end shank. Additionally, the right-hand cut tools are engineered to engage in a cutting action when rotated clockwise.