Premium Collection by Tula Pink thread kit of 12 large (1422 yard) spools of 50 Weight 100% cotton Mako thread from Aurifil. Premium Collection by Tula Pink. 100% Aurifil cotton mako thread. 12 spools, 50wt - 1422 yards each, in the following colors: 4667, 4668, 4653, 4656, 4658, 3320, 4662, 4647, 2843, 4060, 5004, 4670. 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.