These rubber butterfly clutch pin backs measure 9 mm in length and 10 mm in width, with an 11 mm diameter rubber back, and are paired with nickel plated brass blank pins for secure fastening of lapel pins, enamel pins, badges, and tie tacks. The protruding half round rubber clutch design allows quick installation and removal without tools, providing convenient pin replacement and fastening for daily use. Made from durable PVC rubber backings and sturdy nickel plated brass pins, they offer lightweight construction with a reliable grip to keep pins firmly in place. Suitable for DIY craft making, tie studs, badges, citation strips, service ribbons, logos, lapel pins, and jewelry projects for events, uniforms, and decorative accessories. These rubber butterfly clutch pin backs measure 9 mm in length and 10 mm in width with an 11 mm diameter rubber backing, paired with nickel plated brass blank pins for secure attachment of lapel pins, enamel pins, badges, and tie tacks. The half round rubber clutch design allows easy tool free installation and removal for quick pin replacement. Crafted from durable PVC rubber and sturdy nickel plated brass, the lightweight construction provides a firm grip to keep pins safely in place. Suitable for DIY projects such as tie studs, service ribbons, citation strips, logos, and decorative jewelry for events and uniforms.