I BOUGHT THE YARDWORKS LITHIUM GRASS TRIMMER, ON JUNE 2, 2010; JULY 5, THE GUARD BROKE OFF, WHICH IS A SAFETY FACTOR, AS ITS PLASTIC, IS THIS A FAILURE WITH THE UNIT OR JUST A FAULTY PIECE. FOR A $169., THATS A LOT OF HARD EARNED MONEY FOR A PRODUCT TO BREAKDOWN SO QUICKLY; THIS UNIT SHOULD BE REPLACED AND NOT JUST REPAIRED. I'VE HEARD FROM OTHER PEOPLE THAT YARDWORKS ARE INFERIOR PRODUCTS IN COMPARISON TO OTHER SOURCES. THAT TROUBLES ME, ESPECIALLY WHEN IT COMES TO SAFETY. THIS UNIT WAS LEFT AT CTC-STORE FOR REPAIR. read full review »