Remark: 1. Our alu.ferrule/press clips meets DIN3093 and EN13411-3 standard. 2. Material: aluminum, steel, cooper are available. 3. Oval type, hourglass type and stop buttons are available. 4. Steel ferrule, steel stop button, cooper ferrule, cooper stop buttons are available. 5. Size from 1mm to 60mm. 6. Our alu.ferrule is made of seamless tube.