These RJ45 crystal head boots are made of high quality durable PVC soft material, designed for long lasting daily networking use. The 8.0mm large inner diameter perfectly matches thick gauge Cat7, Cat8 and other oversize LAN cables, solving the common trouble that regular small aperture cable boots cannot fit thick wires. Various color choices help you mark different circuit lines clearly when doing server cabinet wiring, home network assembly or office cable organization, greatly save your later troubleshooting time. The special anti-slip ripple structure and open buckle design enable super easy installation, no extra disassembly required. The soft material will not scratch your network cable, and keeps the cable joint stable even after long term frequent plugging. It is ideal for professional network cabling technicians, weak current engineering practitioners and home DIY users to organize their Ethernet connections properly.