The Precision Pulley 88106 features a 5-inch outer diameter and is designed as a SF-D QD hub. This component is crafted from durable materials, ensuring long-lasting performance in various mechanical applications. Its quick disconnect design allows for easy installation and maintenance, making it a practical choice for professionals. The hub meets industry standards, providing reliability and efficiency in load management. Ideal for use in conjunction with other pulleys, this hub enhances the overall functionality of your system.