Efina 60wt Cotton EF49. Colour Kumquat. Sue Spargo’s Efina thread is made from 100% long staple Egyptian Cotton. The thread has been gassed for a smooth finish so there is no fuzz or excess lint. Efina is the perfect choice for hand and machine applique plus hand or machine piecing. Although Efina was originally designed for applique, it is also perfect for English Paper Piecing. Available in 60 colours on 150mt spools.