Product review (2 stars): Old Inventory?
Purchased this directly from WS 12 months ago.  First unit of the 3 pack worked fine when used 6 months ago.  Second unit this week broke off in the filter housing.  Upon inspecting the 3rd unit I saw it was cracked at the top of the neck.  With some effort, I was able to remove the piece in the housing and am now awaiting my replacement order.  Appears to be old inventory, 2 of 3 bad quality control.