Used to verify protection against access to hazardous parts by use of a tool through holes which give access to pre-set controls. Meets IEC, EN, UL and CSA Standards including IEC 1010, EN 61010-1, U- 3101-1, UL 3111-1 and CSA 1010-1. The handle and stop face are made of Delrin®. The rod is stainless steel.