Used to engrave different kinds of stele,tombstone,merit monument, guiding monument,caligraphy monument,art ... purpose of sintered diamond burin/graver:* Used to engrave different kinds of stele,tombstone,merit monument, guiding monument,caligraphy monument,art ... bench, or engraving words on the bowl.* Used to engrave any kinds of lines, words, patterns on different shapes of surfaces such ...