HooAMI Polished Stainless Steel Ball Bead Shape Magnetic Clasp for Jewelry Necklace Bracelet 20mmx12mm Material:Stainless Steel Quantity:1 piece Length:20mm( 6/8");Diameter:12mm( 4/8");Hole Size:2.5mm; Color:Silver Tone; Fit for jewelry making and crafting:bracelet, necklace and another DIY project