You simply insert the fine needle (sizes 9 to 12) in a guide hole and lay the thread across another positioning groove.

Press lightly down on the lever button which directs a shaped pin to pickup and guide the thread through the needle eye.

Simply slide out your threaded needle.

This smart little threader works only with 9-12 size needles.

Being that everything is so fine and therefore fragile, it is important to only use the right size needle and position correctly otherwise the threader mechanism may jam or actually break.

There is a replacement cartridge mechanism available if this inadvertently happens.

Other thoughtful features of the Sewline Threader are a magnet on the base to pickup those fine needles and there is a handy needle storage chamber. An excellent video demonstration on how to use this product can be seen at the following movie.

USE ONLY FINE NEEDLES SIZES NO. 9 to 12