DIYcraft 5mm Invisible Plastic Blank Earrings Pin Post Stud Back Findings Pad Nickel Free For Metal Allergy Brand New Approx. size: 12 mm pin length, 1 mm pin thickness, round plate - 5 mm in diameter Quantity: 100 Pieces (50 Pairs) pins come with backs lock ***BUY MORE SETS, SAVE SHIPPING FEE*** Color: Clear White Material: Plastic