8 Grinding wheels for scissors and knives; grinding instruments for knives and blades; hand tools, hand-operated, namely instruments for grinding and sharpening; hand-operated grinding tools; grinding wheels [hand tools]; hand-operated grinding instruments [hand tools]; grinding stones [hand tools]; hand tools for cutting, drilling, grinding, sharpening and surface treatment; hand-operated appliances and tools for working with materials and for construction, repair and maintenance work; hand tools for construction, repair and maintenance work.