1. Built-in sealing tube penetrating the wire half an inch shorter.2. The "Tee" on the back of the sealing bar (the part you pull to insert the new pipe) is not long enough to snap onto the ladder rung. 3 stars. With a few simple production fixes this would be a great product. Now finding something to pierce a new pipe and something you can't put aside as you climb the stairs is a PITA.
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