Specification: 100% brand new and high quality Size:As pictures show(1 inch = 2.54cm) Color:Black Materials:Plastic Features: Adjustable stroke cam motor Machine with special-shaped structure of handle lock position After installation, the needle wheel does not have a stable support for the machine How to use: 1. Put the needle wheel on the handle first (do not tighten the screw first) 2. Install it on the machine and adjust the tightness of the pressing needle 3. After adjusting the needle, fix the screw with a wrench Packing included:1pcs External Pressure Needle Note: Please be aware that due to your computer monitor display the color may have some difference between the picture and the real item. There is 2-3% difference according to manual measurement.