Screwed wooden frames manufactured from Beech.
 
8mm height with inner and outer parts polished after grinding.
 
Using a hoop for your embroidery or cross-stitch can make such a difference.  Easier to hold, easier to keep the tension uniform, and a lot of fun!
 
Choose from two popular sizes:
the 8 x 130mm hoop (5 inches) $12.50
or the 8 x 190mm hoop (7 inches) $13.50