THE SWITCH IS SUITABLE FOR APPLIANCE OF CLASS II. ARE ... ELECTRIC TOOLS. HT1010 SERIES ARE MULTI-SPEED TRIGGER SWITCHES WITH BY-PASS CONTACT, INTEGRATED DUSTPROOF, THE TRIGGER AND LEVER ... AS FOLLOWS:FULL-WAVE SPEED CONTROL; HALF-WAVE SPEED CONTROL ; DOUBLE SPEED ; INVARIABLE ROTATE SPEED WITH FEED BACK; ON-OFF VERSION; ... , POLISHERS, ORBIT SANDERS ECT. DUSTPRO OF AC TRIGGER SWITCH WITH VARIABLE SPEED