... diamond engraver 2.used for working tombstone letters,marble&sandstone2D&3D relief 3online buy export long life( more than 20hours) ... vacuum brazed diamond graver tools for caving tombstone letter,3d relief C1-C20 specificationShank : 4mm, 6mm, 8mm, 10mm, 12mmCed : ... 4mm, 6mm, 8mm, 10mm, 12mm 22mmCel: 7mm, 9mm, 12mm, 20mm,30mm, 40mmAngle: 20, 60, 90, 120Ovl: 40mm, 45mm, 50mm, 60mm ...