This Crystolon silicon carbide "Tradesmen's Stone" is a large specialty sharpening stone great for many multi-purpose uses, including for sharpening trimming knives & also for use as an abrasive file in many different industries. A red painted wooden handle is firmly attached to the stone for a solid grip when in use.
To obtain best results, lubricate your stone with genuine Norton Sharpening Stone Oil. Oil acts as an effective lubricant during sharpening to float away metal & abrasive particles that would otherwise clog up the stone. When metal particles clog the stone pores, it's called glazing & can ruin the stone.
From the Manufacturer:
Norton Sharpening Stones are made of the highest quality materials & are unequaled for long sharpening life, maintenance of shape & smooth cut.
Product Title Stone Length Width Height Overall Length with Handle Model # Norton Sharpening Stone with Red Handle ~ Coarse & Fine 10 - 1/8" 1 - 1/4" 13/16" 14 - 3/4"JT-930