NG Single Core Hollow Elastic, 2.1mm White, 10-12

I have managed to source a cheaper hollow elastic, I have had it manufactured with a 0.5mm Micro Bore (normal hollow has a 0.7mm) so no flattening out. It has a single colour running all the way through rather than the two.

I have used it myself over the past few months and would say in use it is pretty much like the amber cored but with a bit more power for the same diameter.