Pre-order your Aurifil Case with a spool of 1300m 50wt white Aurifil thread for $ 14.99 and join our Aurifil Thread Club for just $ 10 more. Expected delivery late October. Limit 1 case per customer. Limited time offer. Aurifil Thread Club - with purchase of case and $ 10 membership, you can fill up your case with your choice of Aurifil threads (50wt 1300m or 40wt 1000m large spools) for $ 10 per spool when you bring in your case through December 31, 2019. That's over a year of savings on thread!!!