3M 28375 File Belt Sander Attachment Arm, Vessel J72106M Material Aluminum Mounting Hole Center Material Aluminum Mounting Hole Center to Center 200 mm Finish Unfinished For Use With Linear Shafting Shaft Material Carbon Steel Product Type Linear Support Rail Shaft Material Grade 1060 Standards ISO System of Measurement Metric Support Rail Material Aluminum Support Rail Drilling Pre Drilled Mounting Surface to Shaft Center 53 mm Mounting Hole Type Threaded Series SRMPD Profile Type Standard Profile Mounting Hole Center to Shaft End 100 mm Surface Hardness Minimum 60 HRC Rail End to Hole 100 mm Country of Origin United States They interrupt currents when low level faults are detected in the circuit Contact arms fit specific belt sander brands and models to adapt them for a particular application 28367 Product Type Attachment Arm Country of Origin Taiwan