Dynabrade 57454 8" Sander Backing Pad Non-Vac Urethane is a high-performance backing pad designed for smooth and efficient sanding. Made from durable urethane with medium density, this pad provides excellent support for PSA sanding discs. It mounts securely with two screws and is weight-mated to minimize tool vibration, ensuring a consistent, swirl-free finish. The vinyl face allows for quick disc attachment and removal, enhancing workflow efficiency.Features: 3/8" thick urethane pad with medium density for even sanding. Designed for PSA-type disc adhesion with a vinyl-face surface. Mounts securely with two screws for reliable attachment. High-quality backup pad for extended durability. Weight-mated for smooth running and minimal vibration. Quick and easy disc removal for efficient sanding transitions.Benefits: Ensures consistent and professional sanding results. Minimizes vibration for improved user comfort and control. Long-lasting urethane construction for extended pad life. Easy disc changes enhance productivity in sanding applications. Compatible with a variety of PSA sanding discs for versatility.Technical Specifications: Model: 57454 Pad Diameter: 8 inches Thickness: 3/8 inch Material: Urethane (medium density) Mounting: Two-screw attachment Attachment Type: Vinyl face for PSA-type disc adhesion Application: Sanding, surface preparation, and finishing