The product shown is a Pipishell PISF1 Full Motion TV Wall Mount for 13" to 42" TVs.
This wall mount is designed for TVs between 13 and 42 inches. 
It has a full motion design, allowing the TV to swivel, tilt, and extend to different angles. 
The mount is made of steel and can hold TVs up to 44 lbs. 
It is VESA compliant, with a maximum VESA pattern of 200x200mm.