Protect yourself from electric shock with Crescent’s new patented isolated technology, eSHOK-GUARD, providing insulation of up to 1,000 volts. Combining safety and convenience for a revolutionary experience when working around potential live wire applications, eSHOK-GUARD’s impact-rated design withstands heavy-use, impact tool applications, so you never have to sacrifice protection when using power tools. With over 85% of professionals experiencing shocks on construction job sites, eSHOK-GUARD is protecting you – for life.; Features; eSHOK-GUARD™ Socket Isolator 1/2" x 2-1/2"; Isolation zone insulates all your standard bits, protecting you up to 1000V; Withstands heavy-use in impact applications; Compact design improves precision in tight spaces; Ball detent for secure fastener retention and easy replacement