Features: Upgrade your vacuum pump with this reliable sleeve designed for a perfect fit and long lasting performance. Durable and precise crafted with precision to ensure seamless connection and withstand various working conditions. Made for the J/B Industries Vacuum pumps. Part Number:PR-208 FS This is for the flexible section of the vacuum pump drive coupling. Specifications: Material:Polyurethane Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Flexible Coupler