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DIYHD Telescope Hooks for Sliding Library Ladder,2 Packs,Fit Thickness 20mm Metal Ladder
DIYHD Telescope Hooks for Sliding Library Ladder,2 Packs,Fit Thickness 20mm Metal Ladder
https://www.bizrate.co.uk/homehardware/diyhd-telescope-hooks-for-sliding-oid36374830275.html