150 Black Ruber Clutchbacks for Lapel Pins and Tie Clasps RUBBER HOLDS BETTER. Most agree rubber clutchbacks hold pins on clothing much better than metal butterfly clutchbacks LARGE QUANTITY. Many other clutchbacks sold are similar price but less quantity SATISFACTION GUARANTEED. If you're not happy, we'll refund or make it right. BUY EXTRAS. You never know when you might need another. 11MM wide. Sturdy and durable.