Floriani Commercial’s Premium metallic thread is colorfast, doesn’t kink and will run smoothly at speeds up to 1,000 stitches per minute, according to the company. This 40-weight thread has a polyester core that is wrapped with metallic colors and coated with a special lubricating hardener to prevent the metal from flaking. Additionally, it works well with the same needle that is used for polyester and rayon threads.