Wiha 28394 Insulated Pop-up Slimline Insulated 1000 volt rated 10, 000 volt tested Meets ASTM F1505, VDE 0682/Part201, DIN 7437, EN/IEC 60900, nfpa-70e & CSA specification Friction hold blade holder holds all slimline blades securely. Convenient rotating cap Slimline blades high quality CV steel, through Hardened