Concentric bushing for V-groove wheel #2

Stationary or Concentric bushing, used with #2 V-wheel. 1/4 mounting screw. Nickel plated to resist corrosion. Used to build machine slides with v-track or angle iron rails. Similar to those used in Shopbot CNC routers.

Head is 1/2 dia, and extends 1/4 beyond the wheel.