C-Max Tapered Round #51, 0.4 mm Tool Point 9 (#51 C-MAX CARBIDE PROFILE ROUND)GRSC-Max Tapered Round #51, 0.4 mm Tool Point 9 (#51 C-MAX CARBIDE PROFILE ROUND) • The shape many jewelers and engravers love for stone setting and general engraving is now available in the C-Max Onglette• Length : 1.8(45.72mm)• Diameter : 0.125(3.175mm)