Platinum & Golden Large Quantity -- The package includes 100 pieces metal clasps in classic color, platinum and golden color, and size is about 0.47x0.15"/12x4mm, Hole: 1mm, fit for waxed cords, beading strings. Tiny but strong end tips for jewelry making.Premium Material -- Barrel screw clasps is made from brass, durable and easy to screw. Would not break or deform easily. These barrel clasps are built-in safety screw Lock which are well made and highly durable and easy to screw together.Easy to Use -- Jewelry twist clasps fasten the ends of necklace or bracelet together by screwing two sides together to avoid losing your jewelry. Easy to use, save your time.Funny DIY -- Perfect for creating jewelry craft project or repairing your existing jewelry, necklaces, charm bracelets, anklets, collar choker, eyeglass chain, waist chain, etc.Wide Applications -- DIY jewelry making projects, crafts accessories, necklaces, bracelets, anklets and jewelry chain connect, repairing your existing jewelry clasps or creating light and medium-weight necklaces or bracelet.