PLASTONE flexible file (FLEXSTONE)

Plastone® flexible, non-conductive files are just the right tool for burnishing and cleaning corroded, carbonized, cruddy contact points, especially on pre-1977 manufactured electro-mechanical machines. Replacement for FLEXSTONE file.
(Don't file switch contact points on post-1977 solid state games; most of these contact points are gold plated).
These 3/8" x 4-3/4" x .04" thick, non-conductive, inexpensive files are impervious to oil and water and may be rinsed with soap or solvents to remove dirt and grease.

Reference:

• 77-PLAST