We tried a bunch of different monofilament lines until we found the perfect mono for spearfishing. Our mono is very durable, abrasion resistant and stiff which are the qualities you need. Don't be fooled by cheap mono as much of it cuts too easily and breaks way before it's rated test.
Colors are Black, Red and Blue
Size is 250lb, 300lb and 400lb test
Coil lengths are 100' and 300'