The Austin’s Peep Probe takes the guesswork out of knowing what size peep you have. Simply slide the probe into any peep until it stops, showing the exact size you have. On the handle is a graduated-size scale that correlates to the stem on the probe. Quick, fast, and professional

Probe measures the following inside diameters

• 1/16"
• 3/32"
• 1/8"
• 5/32"
• 3/16"
• 7/32"
• 1/4"
  
  Specifications:
   
• Construction: Aluminum with brass finish
• Length 3.75’’