Packed in bags that look similar.So, grab a piece of the work the employee. The area to place the F/G LH-RH, thus making the stuffing box to a piece of misunderstanding and put the pieces of the job switch.
Pieces packed in a bag of a similar nature , thus resulting in a handful of specimens guilty of space to put the F / G LH-RH is the same, the packaging material into the misunderstandings and result. Give a piece of switch