Description: Perfect for insert the line to the needle eye, prevent your eyes get sick and the light of environment isn't better. Help you to exchange the needle for the sewing machine,can hold the machine's needle to not fall down. Suit for lots kinds of domestic sewing machines which can't exchange the needle by itself,aslo suit for interlock machine. HOW TO USE IT? Cut the power off. Hold the grip Insert the needle into the needle clamp and push it up as far as it will go. Then tighten the needle clamp screw firmly while keeping the holder in place. Cut the power off. Hold the grip of threader with mark up. the thread, inserting it into the Y-groove of the knob from right to left. Place the V- groove over the needle just above the needle eye. Slide the threader down the needle while pushing it gently until the threader pin goes into the needle eye. Push the grip. Remove the threader from the needle slowly. Then pick up the loop with hook pulling the end of the thread out to the back. Size Chart: Size: Approx. 2.87 x 0.47 inch / 73 x 12mm Material: Plastic Color: White Package Includes: 1 Piece Needle Threading Tool 1 Piece Manual