Parlec 7716-144 Tapping Adapter NUMERTAP 770 Sizes Range 1-7/16″-1-1/2″. Parlec 7716-3-144 Tap Adapters. Tap Size (IN): 1-3/16″- 1-1/2″. Tap Size (MM): M30. This item is in the category “Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Toolholding\Adapters & Holders\Tapping Head & Holders”. The seller is “trhu-6305″ and is located in this country: US. This item can be shipped to United States.