Hydro Sleeves are used in conjunction with various types of tooling to
allow for several tools to be mounted as a unit, convert straight bore
tooling into hydro, and improve tool run-out by more accurately cantering
onto a spindle.
The hydraulic sleeves are designed for a light press fit against the tool.
This means that the unit must be fastened together by screws.
When pressurized, the sleeves expands only against the spindle.
Approx $6.99 USD