Ideal for woodcarving applications. Runs cooler, faster, and lasts 3 to 5 times longer. May be used on all woods, hard metals, bone, alabaster and plastic. CeramCut Blue Stones maintain their shape and hold their cutting edge longer than any abrasive stones you now use! Great for pre-texturing, feathering, finish texturing and more. Order by set of 9 or individually. Items listen by stock number or set. (Set includes SP-S5670, SP-S5671, SP-S5672, SP-S5674, SP-S578, SP-S5679, SP-S5682, SP-S5683, and SP-S5684.)