38.3V is a low-voltage arrangement of 3 blown-glass spheres designed to be composed in atmospheric groupings. Each sphere contains multiples interior cavities that can be filled with plants or left empty.
https://bocci.com/38-series/38v-random/38-3v/ 

The round, brushed-nickel canopy is 6 "/ 152 mm in diameter and 1.3" / 32 mm deep. The pendants come standard with 10 '/ 3 m of coaxial cable. Additional cable lengths are available in increments of 10 '/ 3 m, up to a maximum of 120' / 36 m in special applications.