• Thread Size: 4/40

• Size: Across Flats: 1"

• Die Thickness: 3/8"

• Material: Carbon Steel

• Application: For Dressing Over Bruised Or Rusty Threads

• Use With Any Open End, Box Or Adjustable Wrench Or Proper Die Handle

• Chamfered On Both Sides For Longer Life

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.