This is the Idler Pulley Plate. It can be used with both V-Slot and OpenRail. The idea behind this plate is to give you a mountable yet movable plate for your Smooth Idler Pulley.This works great as it allows you to easily tension your belt.

Features

• 6063-T6 Aluminum
• Black Anodized Finish
• 3mm~ (1/8″) Thick