Pad Driver Color Blue Diameter 11 3/4 in Material Polyethylene Rotomold Product Type Pad Driver Overall Length Not Applicable Overall Width Not Applicable Pad/Brush Size 11 3/4 in Shape Round Speed - Maximum 350 RPM Fits Machine Size 24 in Compatible with Grainger Part Number 488Z12 Includes (2) Driver Assemblies Thickness 8 7/8 in Application Cleaning Polishing Compatible with Manufacturer Part Number 1237770 Series Not Applicable