Track lights in a cylindrical body with a diameter of 67 mm are available in black and white and are designed for installation in a three-phase busbar. Thanks to the adjustable beam angle (20-60°), they are an excellent solution for creating accent and local lighting. High color rendering index (CRI>90) allows the use of fixtures in exhibition and demonstration spaces. The minimalistic design of the luminaire will fit both in residential interiors in urban style and in reserved offices.

Dimensions: Ø67×156 mm
Color temperature: 3000, 4000, 6000* K
Luminous flux: 1800 lm
Beam Angle: 20-60°
Color rendering index: CRI>90
Degree of dust and moisture protection: IP20
Power consumption: 20W
Power supply: 230 V
Body color: white, black
Insert color: black

https://arlight.ru/search/index.php?q=LGD-GELIOS-4TR-R67-20W 

those who work in V-Ray versions lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever suits you best