Non-allergenic material: these earring hooks are made of clear resin which are non-allergenic and comfortable to sensitive skin; soft and comfortable, safe to wear and not easy to cause allergies to the skin. Size: earring hook about 16mm long, 12mm wide, 3mm thick, hole: 1.2mm, pin: 0.7mm. Each kit includes 64 earring hooks, 16pcs/color, 64pcs in total, sufficient number meet your various needs. Easy to use: with a hoop towards the bottom to dangle your favorite items, easily have jewelry wire attach to it to create flowing earrings or more stationary earrings. You can diy creative, characteristic personal style earrings. Application: this earring hooks for jewelry making can be used to diy different decorative earrings hooks to meet your wearing needs for different occasions, such as birthday party, valentine's date, halloween, easter, etc. 4 colors: every hook with a mini alloy steel shining ball, smooth surface, corrode towards the bottom. Include gold color, rose gold, silver color, steel color, rich colors can match your different earrings