This RECOIL STI tap is oversized from a standard tap to allow for the wire insert once installed. Suitable for use with free running and screw locking helical threaded inserts.Specifications: Item: TapThread Standard: UNCTap Material: High Speed SteelTap Finish: Bright (Uncoated)Thread Length: 2\"Overall Length: 4-1/4\"Tap Chamfer: PlugThread Direction: Right HandNumber of Flutes: 3Shank Dia.: 0.542\"Standards: ANSITap Grouping: IndividualTap Style: Straight Flute (Hand)Tap Thread Size: 5/8\"-11"