120 pairs butterfly clutch tie tacks pin back replacement with 8mm length blank pins for craft making (silver) janyun </br>specifications: </br>pins flat head diameter: 4.5 mm </br>pin length: 8 mm </br>pin backs diameter: 11 mm </br>pin backs height: 5 mm </br>material: nickel-plated brass </br>package weight: 2.7ounces </br>color: silver </br> </br>package includes: </br>120 x clutch pin backs </br>120 x blank pins