This little gadget doesn't solve the problem of it running out so fast ,but it sure helps run bobbins faster plus you don't have to unthread machine either.I purchased it this past weekend and its well worth the money, I've been watching the price for months now, walmart had it for 24.95 and Hancock's had it for 21.95, then they ran a labor day wkend. sale for 19.95. Sold!!! Its made by Wrights Co. and it also uses batteries.