1000 Nylon Zip Ties. 3 x 150 mm. 150 mm is about 5.9″. Self locking design.
I use zip ties throughout my home brewery and beyond.
Dxg 1000 Pieces Zip Ties, 6 Inch Self-locking Nylon Cable Ties, Black, 3 x 150mm – note that multiple variations of this product may be available, as such a different version may appear at this link