The Veevus 8/0 is a flat unwaxed thread that is suitable for splitting for doing dubbings. With its flat characteristic, it will lay flat on the hook without giving it too much bulk. The 8/0 threads are available on 100m spools.
UNI 8/0 = around 450g
Gudebrod 8/0 = around 450g
UTC 140 = around 935g
veevus 8/0 = above 1kg