Premium Quality Blender Drive Socket. 12 drive socket kit completed with an Allen wrench included. The Drive Socket Kit helps to protect your motor in the event a blade assembly is blocked from rotating. Compatible with most Vitamix Blender models. Premium Quality Blender Drive Socket. 12 drive socket kit completed with allen wrench included. The drive socket kit is made of high-quality and durable materials for durability. The drive socket kit is designed to be easily replaceable. The Drive Socket Kit helps to protect your motor in the event a blade assembly is blocked from rotating.