Double sided combination sharpening stone., Supplied in heavy-duty blow-moulded carry case., 7 Piece Set., Carbon Steel Blades, 6.4mm (1/4 inch), 13mm (1/2 inch), 19mm (3/4 inch), 25mm (1 inches), 32mm (11/4 inch) & 38mm (11/2 inch) chisels & sharpening stone.