[Durable Steel Material]: Crafted from hardened and polished 45 steel, this dapping block resists deformation for long-lasting use in metal forming projects. [Precise Doming Tool]: Features highly polished depressions with accurate machining for creating dome shapes on metal with punches. [Versatile Anvil Hole Sizes]: Comes with multiple anvil hole diameters from 4mm to 20mm, supporting a wide range of dome sizes and jewelry designs. [Professional Craftsmanship]: Designed for jewelry makers, this doming die block delivers smooth, consistent results for reshaping and forming metal pieces. [User-Friendly Design]: The semi circular spheres of the block provide an ideal surface for efficient metal forming, simplifying dome creation for artisans and hobbyists. Item Type: Dapping Block Material: 45# Steel Anvilable Hole Diameter: Approx. 4mm / 0.16in, Approx. 5mm / 0.20in, Approx. 6mm / 0.24in, Approx. 7mm / 0.28in, Approx. 8mm / 0.31in, Approx. 9mm / 0.35in, Approx. 10mm / 0.39in, Approx. 11mm / 0.43in, Approx. 12mm / 0.47in, Approx. 13mm / 0.51in, Approx. 14mm / 0.55in, Approx. 15mm / 0.59in, Approx. 16mm / 0.63in, Approx. 18mm / 0.71in, Approx. 19mm / 0.75in, Approx. 20mm / 0.79in Package List: Color: As Shown