Flat Stiching Wire.
It comes in 6 sizes. Choose the size that fits best for you.

18x20 / 19x21.5 / 19.5x21 / 20x24 / 20x25 / 21x25 /

 

GAUGE	WEIGHT
18x20	5 lb
18x20	10 lb
18x20	30-40 lb
18x20	70 lb

  

GAUGE	WEIGHT
19x21.5	5 lb
19x21.5	10 lb
19x21.5	30-40 lb
19x21.5	70 lb

 

GAUGE	WEIGHT
19.5x21	5 lb
19.5x21	10 lb
19.5x21	30-40 lb
19.5x21	70 lb

 

GAUGE	WEIGHT
20x24	5 lb
20x24	10 lb
20x24	30-40 lb
20x24	70 lb

 

GAUGE	WEIGHT
20x25	5 lb
20x25	10 lb
20x25	30-40 lb
20x25	70 lb

 

GAUGE	WEIGHT
21x25	5 lb
21x25	10 lb
21x25	30-40 lb
21x25	70 lb