It is designed to work by attaching to your existing 4x4" hoop or larger (not included) Hoop size is 4"x4"(100x100mm) This hoop will make your job easier for embroidering on sock cuffs collars and other hard to hoop items, For brother PE100/PE150/PE200/PC7000 For viking #1/#1plus/Design 1 and More if you are not sure if this hoop fits your machine, just contact with us. for Pfaff 7570
for Singer XL-1000/CE100/CE200
for Elna 8006/9006(With The Big Hoop)
for Bernina BE180/500/600(With The Big Hoop)
for Brother PE8200/PE8500(With The Big Hoop) PE100/PE150/PE200/PC7000
for Babylock ES1/ESE/EM1/EM2(With The Big Hoop)
for Janome/New Home MC9000/MC5000(With Hoop #5)
for Viking #1/#1 Plus/Design 1