UTC Ultra Thread is strong, smooth and flat thread. It is lightly waxed, slow building nylon thread, and looks a bit like floss. Great for flat and smooth bodies and heads. Note especially fluoro colours.
70 Denier strength is approx. same as UNI 8/0 and 140 denier equal approx. 3/0.
90 metre (100 yard) spool in 70 and 140 denier strengths. 68 metre (75 yard) spoon in 280 denier strength.