This is a 8W fluorescent ring bulb. It comes with 68mm inner diameter and 93mm outer diameter. It fits the 8W microscope fluorescent ring lights with Model FRL8.
Features & Specifications
Power: 8W
Voltage: 110V/220V
Type: fluorescent ring bulb
Inner Diameter: 2-5/8" (68mm)
Outer Diameter: 3-5/8" (93mm)
Manufactured under ISO 9001 Quality Control Standards