Compact recessed downlights with a frame for puttying are designed for installation in plasterboard ceilings. The modular design allows the luminaires to be installed in a mounting plate without special tools. After installation, the diameter of the visible part is 50 mm. The compact luminaire is minimalistic and does not distract attention from the surrounding interior, while high technical performance will not go unnoticed: thanks to the low discomfort index (UGR<16) and high color rendering index (CRI>90), high-quality lighting is created that is pleasing to the eye.

MS-ATLAS-TRIMLESS-R50-6W
Dimensions: Ø90×52 mm
Installation Hole Diameter: Ø65mm
Color temperature: 3000, 4000K
Luminous flux: 455, 520 lm
Color rendering index: CRI>90
Degree of dust and moisture protection: IP20
Beam Angle: 40°
Power Consumption: 6.3W
Supply voltage: 230 V
Body color: white, black

https://arlight.ru/search/index.php?q=MS-ATLAS-TRIMLESS-R50-6W 

MS-ATLAS-TRIMLESS-R50-8W
Dimensions: Ø90×52 mm
Installation Hole Diameter: Ø65mm
Color temperature: 3000, 4000K
Luminous flux: 700, 800 lm
Color rendering index: CRI>90
Degree of dust and moisture protection: IP20
Beam Angle: 32°
Power consumption: 8.4 W
Supply voltage: 230 V
Body color: white, black

https://arlight.ru/search/index.php?q=MS-ATLAS-TRIMLESS-R50-8W 

“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"