●The kit contains 830 pieces 10 styles jump ring, lobster claw clasps, ends extender chain, drop ends. No more worry about falling and losing. ●There are 5 sizes jump ring, about 5~10 diameter; 3 sizes lobster claw clasps, about 10~12 long; ends extender chain about 40mm long; drop end about 6x3mm. ●All jewerly making supplies are placing independently in 10 grids box organizer storage container, keep your things tidy and safe. ●Excellent size for suspending small items from delicate necklaces, bracelets, earrings, anklets and many ornaments. ●Learn simple and exciting techniques to make jewelry just like you see in department stores, affordable way for DIY to get great style.