3M Disc Pad Holder 917, 7 in x 5/16 in x 3/8 in x 5/8 in-11 InternalGeneral Information Brand 3M Abrasive Attachment Type Hook & Loop Function Attachment Style Hook & Loop, Non Woven Abrasives Hook Type 7 Product Type Back up Pad Type Regular Country Of Origin United States California Residents Proposition 65 Warning Dimensions and Specifications Center Hole Diameter (Imperial) 0. 375 in Center Hole Diameter (Metric) 9. 525 mm Maximum Speed 6000 mps Net Weight (Imperial) 0. 54 lb Net Weight (Metric) 244. 94 g Overall