LP Isolator (LPI) - The LPI slips over the spindle of your turntable and rests on the label portion of the LP.
The LPI absorbs the micro vibrations that are present at the label area, and makes the reproduction clearer, cleaner, more delicate, more open, and lifelike. The LPI Short Spindle is compatible with many turntables. The LPI Long Spindle works with turntables that incorporate a longer than average spindle.
More info - http://www.stillpoints.us/index.php/product/ultra/314-ultralpi