This is 260 Denier Metallic (approximately 40 weight). 5000 yard spools are special order items. Robison-Anton is changing the king spools to 3000 yards and as they run out of the 5000 yard spools, they are substituting the smaller spools. These spools are $18.25 each. The prices on the 1000 yard spools have change to $11.25 and this change will be reflected on your invoice.