• Size: 3/32" Thick X 3-1/4" Diameter

• Material: Heat Treated Hardened Steel

• Measures 37 Wire Sizes

• Ideal For Gaging Non-Ferrous Wire And Metals Such As Copper, Brass And Aluminum From #0 To #36

• Wire Gage Is Etched On Front And Decimal Equivalents Of Sizes Are Etched On Back

Warning this product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.