... HELD MOTOR OPERATED ELECTRIC TOOLS. HT1010 SERIES ARE MULTI-SPEED TRIGGER SWITCHES WITH BY-PASS CONTACT, INTEGRATED DUSTPROOF, ... , AS FOLLOWS:FULL-WAVE SPEED CONTROL; HALF-WAVE SPEED CONTROL ; DOUBLE SPEED ; INVARIABLE ROTATE SPEED WITH FEED BACK; ON ... ROTARY HAMMERS, JUG SAWS, RECIPROCATING SAWS, SABRE SAWS, ELECTRIC MIXERS, POLISHERS, ORBIT SANDERS ECT. DUSTPRO OF AC TRIGGER SWITCH WITH VARIABLE SPEED ...