B&B Manufacturing provides fast and economical production of timing pulleys for custom and prototype applications. That means whether you have a unique need that can't be met with standard pulleys or require a quickly machined pulley for a low-risk, high reward prototype, we're here to help. We stock lengths up to 12 in, but can accommodate longer lengths and custom tooth counts. B&B Manufacturing Powerhouse™ HTD® Timing Pulley Bar Stock, 4.357 in Outside Dia, 4.411 in, 44 Grooves, 8 mm Pitch, 1 in Hub Dia, 11 in Overall Length, Aluminum