A spring ring clasp opens when you push backw...
Curved Lock claspFree Diy Jewelry Projects | ...
1
316 Stainless Steel Snap Shackle Swivel Bail ...
Sterling Silver 15.5x10mm Double Interchangea...
Google Image Result for http://www.julidougla...
零件，机关，结构
太齐全了！原来它们的结构是这样
Lobster claw claspFree Diy Jewelry Projects |...
