This heavy-duty 60-LED ring light has a black color solid metal body construction. It features 2-7/16" (62mm in diameter) inner diameter and comes with a 1-7/8" (48mm in diameter) ring adapter. With variable intensity control, it provides cool, even, intense and focused shadow-free illumination. It is an ideal durable light source for microscopes. and comes with one year warranty against manufacturing defects. Features & Specifications: 60 bright white LED bulbs 6400K color temperature Metal body controller Heavy-duty durable metal control box 100,000 hours of life Intense and focused shadow-free illumination Variable intensity control Mounting size: up to 2-7/16" (62mm) in diameter Inside diameter of ring light: 2" (51mm) Outside diameter of ring light: 4" (100mm) Power input: 110-240V, 50-60HZ, auto switching Fits up to 2-1/2" (64mm) mount rings Packing List: 60-LED Ring Light Metal Control Box 48mm Ring Adapter