In collaboration with Earth League International, Aurifil has created this mini-collection inspired by an magnificent animal currently in need of attention, advocacy, and compassion. Set includes dark, medium, and light grays. Suggested needle: 70/10 or 80/12. 'Sumatran Elephant' color builder thread set from the 'Endangered Species' collection by Aurifil, 3 large spools of 1092 yds, 40 weight, 100% cotton Mako thread from Aurifil. Colors included: 2600, 2610, 5004.