This is a precision round body actuator with 30mm travel.         
Piston is spring return with 1/8" NPT ports.         
For availability of Metric (mm) fittings see:         
http://www.kkdepot.com/product.asp?key=917         
For availability of English (inch) fittings see:         
http://www.kkdepot.com/product.asp?key=918         
Item is used - In like New condition - With 90 day Warranty.         
Actual picture of Actuator         
For proximity limit switches see:         
www.kkdepot.com/Default.asp?keywords=+d-+solid+state+proximity+switch&action=allwordsearch         
For other motion needs see:         
www.kkdepot.com/category.asp?cat=36         
Price $10.00 each (1 available)