Specification Brand : uxcell BulletPoint1 : Package Includes: 50pcs pin backs locking, 50pcs screws. Pin Keeper Size: 1.9x6x5mm(0.07x0.24x0.2)(Inner Dia*Outer Dia*H), suitable size for holding lost pins firmly! BulletPoint2 : Material: The locking pin backs are made of plated copper, rendering them rustproof, and durable, without worrying they will fall off. BulletPoint3 : Easy to install: Just put a pin lock in the back of your favorite pin, then use the wrench to secure it in place, the whole process is less effort and time-saving, nice supplies for every pins collectors and pins lovers BulletPoint4 : Multiple Use: Suitable for pins, badges, name tags, display books, lanyards, bags, vests, hats, badges, collectibles and more. You can pin your badge to your clothes, bags or jeans. BulletPoint5 : NOTE: Please confirm the size before purchasing. ClaspType : Pin Color : Silver Tone Department : womens ExternallyAssignedProductIdentifier : 6975182586229 FinishType : Polished FinishType1 : Chrome FinishType2 : Chrome GemType : no gemstone GemType1 : no gemstone GemType2 : no gemstone GemType3 : no gemstone GpsrSafetyAttestation : 1 ItemName : uxcell 50pcs Pin Backs Locking Pin Locking Pin Keepers Locking Clasp Locking Pin Keeper Backs Locking Pin Backs Copper Pin (6mmx5mm, Silver Tone) ItemPackageDimensions_Height : 0.47 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : jewelry-making-pin-backs Manufacturer : uxcell Material : Copper Material1 : Rhinestone Material2 : Metal MetalStamp : no metal stamp MetalType : alloy ModelName : DIY-UN0056-12BU-US12 ModelNumber : DIY-UN0056-12B-US12 NumberOfBoxes : 1 NumberOfItems : 16 NumberOfLithiumMetalCells : 1 NumberOfPieces : 50 PartNumber : a24053000ux0987 Pattern : Striped PinType : Straight ProductDescription : Descriptions:Material: The locking pin backs are made of plated copper, rendering them rustproof, and durable, without worrying they will fall off. Easy to install: Just put a pin lock in the back of your favorite pin, then use the wrench to secure it in place, the whole process is less effort and time-saving, nice supplies for every pins collectors and pins lovers Multiple Use: Suitable for pins, badges, name tags, display books, lanyards, bags, vests, hats, badges, collectibles and more. You can pin your badge to your clothes, bags or jeans. NOTE: Please confirm the size before purchasing. Specification: Material: Copper Color: Silver Tone Pin Keeper Size: 1.9x6x5mm(0.07x0.24x0.2)(Inner Dia*Outer Dia*H)