The Zenith Rocker Arm will fit ONLY Zenith II Hylo Tables. The Zenith II Rocker Arm is a Medium on the hardness level to install.
Difference Between The Bolt & Roller Bearing Style Rocker Arms
The Roller Bearing style is the latest style used by Zenith Tables. The roller bearing rocker arm kit makes it so you do not get the black dust all over your floor, and it will NEVER need replaced again. You may wear out the bearing; but since the bearing rolls, you will not wear out the rocker arm!
The bolt style was used a couple of years on the Zenith Cast Iron Hylo Tables and the first versions of the Zenith II Hylo tables. They are cheaper; but you get the black dust and they usually only last about 10 years.
Either set can be used on a Zenith II table
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