Precise .251-.500″ Minus Black Oxide Steel Pin Gage Set- 303-505M2A

• Black oxide coating protects against rust and corrosion which extends plug gage life
• Black coating can also serve as an indicator for wear and tear to timely renew the plug gage calibration
• Class ZZ tolerance, Minus Accuracy: +.0000 -.0000
• .001 Set increment
• Heat treated to a hardness of 60/62 HRc
• Uniform 2″ overall length and within .0002″ round
• Each set includes a pin gage handle.

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