Dispersion: 360°
Bulb NOT included.
1/Pack

Can be converted to a working lamp.
Bottom open to accept a bulb. Bulb found here: RO10

Here are the dimensions for the available sizes:

5mm Dimensions: R=3/16" (5mm) H=5/16" (8mm)

8mm Dimensions: R=5/16" (8mm) H=9/16" (14.5mm)

10mm Dimensions: R=3/8" (10mm) H=5/8" (16.5mm)