This is the Alphasew Universal Cap Hoopster Attachement. Makes cap embroidering easy by simply attaching to the machine hoop. A special clamp firmly holds the visor which keeps the cap securely in place throughout your projects. A tranparent template with grid marking ensures proper design placement. You will be able to embroider beautiful designs on caps and other hard to handle items.You will need the large hoop to use this cap hoop.Will all also Work with the following machines: Brother 700 750D 770, 780D. Simplicity SE2 , SE3. All White Embroidery Machines. Bernina Deco 500, Deco 600 .Brother PE100, PE150, PE200, PE180.