The TB Wood's BK3678 2-Groove V-Belt Pulley is engineered for efficient power transmission in light-duty applications. Designed to accommodate both A (4L) and B (5L) cross-section V-belts, this pulley offers versatility in belt selection. Constructed from high-quality cast iron, it ensures durability and reliable performance. The fixed bore measures 7/8 inches, with an overall length of 1-31/32 inches, and the pulley features two grooves with a face width of 1-3/4 inches. The outside diameter is 3.75 inches, and the pitch diameters are 3 inches for 4L and A belts, and 3.4 inches for 5L and B belts. The BK3678 pulley is compatible with standard V-belts, including classical and cogged types, and includes a keyway for secure attachment. Its design allows for easy mounting and maintenance, making it a practical choice for various industrial applications.