No tools required: Butterfly clutch with spring fastener slices allow you to install and remove it easily, handy and convenient for use.
Tie tacks: Clutch backs size is 11 mm in diameter;pins size is 10 mm in diameter, 9 mm in length , with black color, metal locking pin backs is small and low profile.
Versatile: Blank pins and clutch back can be applied to make tie tacks, badge insignia, citation bars, service bars and jewelry making, etc.
Sturdy and durable: Butterfly Clutch backs and blank pins are made of nickel plated brass, sturdy and light, lock pins firmly and keep them secure.
Good for keep tie in place, clutch pin backs make some DIY crafts,suit for tie tacks, badge insignia, citation bars, service bars,signs, lapel pins and jewelry making.