I bring to your attention German lamps factory SLV
model Helia 60

Characteristics
Gross weight, kg: 0.736
Net weight, kg: 0.498
Depth of installation, cm: 2
Diameter of installation, cm: 7
Diameter, cm: 3
Length of the suspension, cm: 150
Length, cm: 60
Color rendering index, CRi: 90
Protection class: III
Energy efficiency class: A ++
Lamp included in delivery: no
Material: Aluminum
Voltage, V: 500
Nominal beam angle, °: 40
Luminous flux, lumens: 470
Mounting method: recessed ceiling installation
Average service life, h: 30000
Catalog page: MORE WHITE 2017: 87
Light distribution type (1): straight
Light distribution type (3): symmetrically rotatable
Color: brass copper, white, black
Color temperature, Kelvin: 3000

The models are made in size, Corona Render materials. To translate materials into V-ray, click the right mouse button and select "V-ray Scene Converter"
Enjoy!