This Set has 140 Mini King Cones of Polyester Machine Embroidery thread. There is 1100 yards of Thread on each spool. The thread is 40wt. Each spool is individually shrink wrapped to protect from dust. There are 140 colors in this set (no duplicates). You receive many extra items with this set. You will get the 120 spool Wooden Thread Rack, 5yds of Tearaway Backing, 1 X-large cone of White Bobbin Thread.