This is a rare beast. A very expensive and specialized hydraulic actuator. It looks like a regular cylinder but it's hiding an interesting surprise. And not the kind of surprise you got when your Uncle Grandad first asked you to pull his finger. Society for the Enabling of Skookum Choochers: http://www.Patreon.com/AvE Make a bold fashion statement: http://www.teespring.com/skookum