Lovely open back frame - reminiscent of a pocket watch, locket or embroidery hoop. Flat on inside, curved outside. Fill with resin, polymer clay, etc. How to Use. Create a temporary back by sticking to some packing tape. Pour resin. After the resin is cured, peel off the packing tape. If you want, you can then add a little resin to dome the back.

Made in Mexico. 43mm x 47mm x 6mm Hole size is approx. 2.4mm(bail). Inside diameter (ID) is 38mm mm. By the each.