Petzl have received reports of users experiencing rope slippage while using the ZIGZAG, ZIGZAG PLUS and ZILLON. Following these reports, they have identified two defects causing the slippage. Petzl therefore ask you to do a manual inspection and a function test of your product, to detect any possible slippage. In case your product slips, Petzl are providing details on their after-sales returns service.
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