Amtech E2580 150mm (6") Coarse Diamond Sharpening Stone

Amazon

240 GRIT: This 150mm (6") course (240 grit) diamond sharpening stone is ideal for sharpening plane irons, chisels, garden shears and lawn mower blades DURABLE AND EASY TO USE: Extremely tough, it does not require oil lubrication, only water, for quick, easy and effortless sharpening, Weight: 0.5291094288 Pounds, Manufacturer: Amtech

Zoro Tools

240 GRIT: This 150mm (6") course (240 grit) diamond sharpening stone is ideal for sharpening plane irons, chisels, garden shears and lawn mower blades. DURABLE AND EASY TO USE: Extremely tough, it does not require oil lubrication, only water, for quick, easy and effortless sharpening.

ManoMano

Quick, easy and effortless sharpening. No oil lubrication needed, only requires water. Extremely durable. Approx size: 6" (150mm). Coarse grade (240 grit) used for sharpening plane irons and chisels. Ideal for garden shears and lawn mower blades.