This small diameter "BLUE" balance wheel fits the Ultrafeed LSZ-1 Sewing Machine and increases the operating speed of the machine compared to the PowerPlus or Monster II balance wheel.
This wheel has a hole inserted for use with the Posi-Pin system. It can also be used with the compression clutch mechanism. If ordering this balance wheel for the current Ultrafeed sewing machines you will also need to order a 13" Cogged Sewing Machine Timing Belt.