FILLED HOLLOW CHARMSThe hollow charms can not only be used as an empty charms alone, but it is also very suitable to filled rhinestones, resin, glitter, mini charms, or cabochon on the hollow charms. 20PCS 4 STYLE OPEN BACK BEZEL FRAMES: Open back bezel frames have 4 style such as love heart, photo frame, wings and star moon, 5pcs of each style, 30pcs in total, if you are interested in open back bezel frames, this will be perfect for you. SIZE: The open back bezel charms are in 4styles, each style 5pcs, in total of 20pcs. Heart charms, 31x27x2mm/ 1.22x1.05x0.08 inch, hole, 2.5mm. Photo frame charms, 29x22x2.3mm/ 1.14x0.87x0.09 inch, hole, 2mm. Wings charms, 36.5x22.5x2.5mm/ 1.44x0.86x0.1 inch, hole, 2mm. Star moon charms, 25x23x2mm/ 0.98x0.91x0.08 inch, hole, 1.8mm, all storage in a plastic box. HIGH QUALITY ALLOY: The hollow heart charms is made of high quality alloy, which makes the hollow heart charms look very gorgeous, and the alloy is very strong and not easy to be damaged even if it is hollow design. SPECIAL MEMORY: Open bezel charms can not only be used to make earrings, necklaces, bracelets and so on, but you can also fill the charms with photos to make memories that belong to you only.