2PK CORE DRILL ADAPTER FOR HILTI DD750 DD160 DD250 DD400 – DD-BU to 1-1/4-7 THREAD. The item “2PK Hilti Core Drill Adapter- Quick Disconnect Male Spline to 1-1/4 7 Thread” is in sale since Sunday, May 20, 2018. This item is in the category “Business & Industrial\Light Equipment & Tools\Drills & Hammers\Core Drills & Rigs”. The seller is “americandiamondtools” and is located in Pomona, California. This item can be shipped to United States.