Quick Change Disc Backup Pad: TR, 4 in Dia, 5/8"-11 Internal-Thread, Hard Density

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Item: 20RW53, MFR: 83489, Brand: 3M

Technical Specification
Compatible Abrasive Type Quick-Change Sanding Discs, Quick-Change Surface-Conditioning Discs
Abrasive Mounting Quick Change System TR
Overall Diameter 4 in
Connector Size 5/8"-11
Tool Connection Type Internal-Thread
Density Hard
Maximum Operating Speed 12,000 RPM