Poly Crystalline Diamond Dies are available in 0009in to 600in or 0. 023mm to 15. 0mm hole sizes and ideal for nonferrous wire, especially larger sizes where demanding wear is a problem, but surface finish is less critical. These Diamond Dies have excellent wire roundness and provided with a good wire surface finish. These Diamond Dies ensure maximum die life which provides highest production efficiency with less downtime. These Poly Crystalline Diamond Dies are resistant to die fracture and breakage and predictable die wear.