[Strong Material]:Free of lead and ; strong and ; long-term use not lose its luster; easy to use and install; not irritate the skin; and comfortable to wear. Please rest of our quality, we all use the highest quality alloys. [Easy to Use]:There is a ring on the top of the clamps crimp ends, which allows you to easily add connectors. To use flat nose pliers, you can flatten ribbons or fabrics with internal teeth to fix the items in place, hide frayed ribbon ends. [You Get]:150 pieces clamps pinch crimp ends, 5 size,8mm,10mm,13mm,20mm,25mm,10pcs Silver K gold for each size,10pcs white K for each size,10pcs black for each size. Enough quantity to meet your various DIY jewelry needs. [5 Different Sizes]: 8mm/0.31inch, 10mm/0.39inch, 13mm/0.51inch, 20mm/0.79inch, 25mm/0.98inch. , this size is , which can better help you design jewelry without burden. [Wide Application]:Suitable for jewelry making, beading, braiding, art crafts, making necklaces, bracelets, anklets and other jewelry, ribbon, lace, leather flat cords and bookmark ends, DIY and so on.