... ,sanding wood, metal, plastics Model Number: GXK51,GXK51-B Model Number:GXK51,GXK51-B Product CodeGrain Backing Grit Roll Width (mm)UsageApplicationGXK51 ... general purposes for wood and metal working1400customer request width GXK51-B aluminum oxideX Cotton & Polyester P36- P400 1400belts,flap discs general ... working, metal working, and plastic customer request width cheap gxk51-b