I am industrial yarn ignorant. I hope that I am passing a bargain to someone who knows how to use it. I am selling it by the lb instead of yards because it did not have that information that I can tell. It is obviously thousands of yards. I don't want to shoot myself in the foot either :-).
I know little about using this yarn except for it's actual specs: (Item is new, may have a piece or two come off that I clipped but sold by weight).
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From The Site

Applications for rPET industrial yarn

Black MOPET-r Yarn 4535T an be applied in different products and it is also an  efsa approved food contact material. It is perfect to use for: 

Properties

Linear
density
(nominal)

 Filaments Linear
density		 Breaking
force		 Breaking
tenacity		 Elongation
at break		 EASF

HAS
2 min.
180° C
dtex # dtex N mN/tex % % (xN) %
               
1100 210 1115 80.5 722 14.0 7.0 (45N) 5.8
1670 210 1692 117.5 694 14.8 8.1 (68N) 4.6
2200 210 2228 163.7 689 14.5 8.0 (90N) 5.7

Twist and make-up

Package type: cylindrical bobbins Pallet dimension: 105 / 100 / 120 cm (H/L/W)
               

Linear
density
(nominal)

 Filaments Twist Package
weight		 Tube
dimension		 Bobbin
dimension		 Bobbins
per pallet		 Pallet
weight
dtex # t/m kg L/O (mm) O (mm) # kg
               
1100 210 0 10.1 293 / 94 250 48 485
1670 210 0 10.1 293 / 94 250 48 485
2200 210 0 10.1 293 / 94 250 48 485