BENCHTOP JEWELRY POLISHING BOX was designed by jeweler for jewelers with compact 7 inch to fit nicely on your favorite GRS bench pin mount. 

It is made of durable clear flexi glass that could withstand scratches better than regular one and rounded top corner for better view at any angle. 
There's also a 1 1/4 inch vacuum hose connection.  
The dimension: 7 in wide x 7 in deep x 7 in tall 
The opening on both sides are 4 in.
If you have a hard time with different types of vacuum connection, please feel free to contact me as i might have the connector for you. 
Don't forget to look at my other exiting tools you may like.