Say goodbye to guessing a testing various sockets before you find the right one, our Bolt Head Gauge quickly identifies the right size of socket needed no matter if it's metric or SAE. Suitable for any industry or job with it versatile range of reading from 8 to 25mm & 5/16" to 1" for SAE Bolts and compact size. Keep this essential tool on your person or key chain at all times with our incorporated carabiner hook making to put the socket hunting to and end.

• Includes 1 Keychain Gauge
  
• Durable Construction; Made of High-Quality Stainless Steel
  
• Compact Size; makes it easy and reasonable to keep on your person
  
• Quick and easy size identification, taking the socket testing out of the equation
  
• Incorporated Keychain; allows you to easily keep it on your keychain, bag or or belt loop, ensuring it's always within reach
  
• Easy Read Size Engravings
  
• Compatible with 8-25mm & 5/16" - 1" Bolt Heads
  
• Never guess what size of sockets you need again