Specifications:

The HP 8100 Mag Roller Stabilizer is comprised of two parts, a left and right, each located at the end of the mag roller sleeve. Faroudja sells both parts as a set.

As its name suggests, the stabilizer holds the mag roller in place and keeps it stable as the mag spins continually.  Please note:  If the stabilizer is damaged, a print interval defect is likely to occur.