It has 3 rods with 40mm, 34mm and 30mm holes. It can reach a height of 100 mm. UPDATE: I used the hydraulic piston a number of times (3-4) before the seal failed. (The liquid is out and no longer expands) Hand screw pulled out, well coated with Loctite 65% moly paste and off we went. Since then I have used it on over 20 ball joints and every time it has worked perfectly. I love it so much as a working technique that I ordered another set of ball joint cages so I have 2 sizes ready to go and extra parts to back up. Love this tool even after the hydraulic cylinder broke... I probably won't use the hydraulic cylinder in a new set because the hand screw works great, it's much more compact and easier to use. (Also safer...)
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