This 10" Flex Arm from Beneath the Surface has a 1/2" diameter and enables the mounting of a Light & Motion SOLA dive light via the 10-32 x 1/4" screw provided

FA-10-SOLA-NB1.0
 
Key Features
  • 1/2" Diameter
  • 10-32 x 1/4" Screw
  • Made in USA