Features: 1) The punch holder and die holder are parallel within 0.0005" (0.013mm) 2) The die set assembly is parallel within 0.001" (0.025mm) on left to right and front to rear dimensions 3) Location of pins and bushings are within 0.0005" (0.013mm) 4) Upper and lower plates are ground to 0.0003" (0.008mm) 5) Precision die sets available in 2-post, center-post and 4-post styles to your specifications Outer packing: 1pc/ctn