Home Slickdeals Klein Tools ET300 Circuit Breaker Finder / Receptacle Tester $19.99 Slickdeals Klein Tools ET300 Circuit Breaker Finder / Receptacle Tester $19.99 By ARCOM - 21 December 2020 82 0 SHARE Facebook Twitter Go to the deal page: Klein Tools ET300 Circuit Breaker Finder / Receptacle Tester $19.99