VCE GJ670BL Pass Through RJ45 Crimping Tool | Cat5e Cat6 Cat6a Cat7 | Ethernet Network Tool. ✔ 1x GJ670BL RJ45 Pass-Through Crimp Tool. ✅ Compact & Portable – Fits easily in your toolbox or bag. ✅ Ergonomic Grip – Comfortable, anti-slip handle for extended use.