... Detailed Product Description Any spec ceramic pin gauge or ceramic mold punch and other ... Carbide,Ceramic,Metal.Quality character: roughness ≤ Ra0.20mm density ≥6.0g/cm3 , hardness ≥HRc58, coefficient of friction ... set (plastic/wooden box), spile, pin gauge handle. Usage: pin gauge is applicable for measure the hole diameter, ... also can be used as the go/ungo gauge and to measure the depth of the hole. ...