Check the listing for details. Spyderco Ceramic Bench Stone Medium Grit Sharpener 302M. Condition: New. Listed at 55.96 USD. Water Purification Tablets w/ PA Spyderco Ceramic Bench Stone - Medium Because Spyderco's benchstones are flat and broad they are highly effective for honing wide tools like plane irons, chisels, large blades, woodworking equipment, even ski edges. Available in Medium (pictured), Fine or Ultrafine grits (see related items), each 2"x8" stone comes packaged in a rigid polymer storage case complete with non-skid rubber feet for tabletop use. As with all of Spyderco's ceramic stones, use our benchstones dry without lubricants or oils. To clean: wash with fresh water and scrub metal particles from the stones with a plastic scouring pad and abrasive powered cleanser. BRAND NEW IN ORIGINAL PACKAGING! For our full line of Spyderco Knives For our full line of Spyderco Accessories