The TB Wood's 2VP65138 1-3/8" Bore 2-Groove Variable Pitch Pulley is engineered to provide precise speed adjustments in belt-driven systems, enhancing operational efficiency and adaptability. Designed for use with various belt types, including 4L, 5L, 5V, 5VX, A, AX, B, and BX, this pulley offers versatility across multiple applications. Its cast iron construction ensures durability and reliable performance under demanding conditions. The pulley features a finished bore with a keyway measuring 5/16" x 5/32", facilitating secure attachment to shafts and minimizing the risk of slippage. With an outside diameter of 6.5 inches and a length through bore of 3.25 inches, it is suitable for installations where space constraints are a consideration. The variable pitch design allows for easy speed adjustments, enabling operators to fine-tune system performance without the need for additional components. This adaptability is particularly beneficial in applications requiring frequent speed changes or precise control over machinery operations. By incorporating the TB Wood's 2VP65138 pulley into your equipment, you can achieve optimal performance, reduce maintenance costs associated with belt replacements, and extend the lifespan of your drive system. Its robust construction and design make it a reliable choice for industries such as manufacturing, material handling, and processing, where efficient power transmission is critical.