Pastel by Aurifil thread kit of 12 large (1422 yard) spools of 50 Weight 100% cotton Mako thread from Aurifil. Includes the following colors: 2105, 2000, 2615, 2886, 2420, 2715, 2835, 2423, 2560, 2805, 2430, 6733. Long staple Egyptian cotton is the best in the world! The 50 weight is the finest of the Mako threads and is very smooth and strong. 100% mercerized cotton.