Name: Automatic threader Material: engineering plastic Color:white Weight: 5g Size: length 7.5cm/3.0in Packing: Individually wrapped in PP bag with English manual. Function: Used for threading and changing needles for sewing machine/edge locking machine/bandage sewing machine, etc. Applicable: as long as the needle eye is not very small can be used for most of the old and new sewing machines. Threading demonstration: 1. Place the thread horizontally on the threader bayonet. 2. Place the threader close to the needle. 3. Slide the threader down along the body of the needle and the needle threader tab will pass the thread through the needle hole. 4. Slowly remove the threader. 5. Hook the thread with the tip of the thread hook. 6. Hook the thread out and finish.