10pcs/lot LED Tube Light Fixture Connection Cable T4 T5 T8 LED Tube Connector 3 pin Double end Cable Wire Female/Male+Female|Portable Lighting Accessories| - AliExpress
E-Simpo® 50-Pack CFL T8 to T5 Fluorescent Tube Side Cap Adapter,T8-T5 Tube Side Cap Converter, Allow You Install T5 28W CFL into T8 Fixture (L31 for 2ft/465mm T5 Tube) - - Amazon.com