This is a replacement salon chair hydraulic manual foot pump lift cylinder. 4-1/2" wide (HL4500s from Highland machine company)
It's new never used. It's for heavy duty salon chairs not the cheap ones, you pump it up with your feet it has the paperwork the model number and comes with a 4-hole base. We needed the Chrome base and trim we never use the cylinder, it's been sitting on a shelf stored for 10 years.
It has about 8 to 9" of lift, very powerful you could probably use the cylinder for other things.
Come see at work before you buy it text or call me 5eight5-943-6464 come pick it up on Akron Street Rochester 14609 delivery available