• .9375" / 15/16" ID Works perfectly with 3/4" EMT conduit
• Keeps targets where they should be yet allows them to spin
• Zinc plated for weather resistance
• includes 1 PAIR of set screw shaft collars
  

Note: As is common in pipe 3/4" EMT conduit is not actually
3/4" it is .922 diameter so these .9375" collars work perfectly.