HILTI core drill machine adapter DD200 to 1-1/4 UNC and 1/2 BSP
CORE DRILL ADAPTER FOR HILTI DD200 + to 1-1/4" UNC outside threading / 1/2" BSP inside threading
1-1/4" UNC threading becomes the standard fitting for core drills,as well for 1/2" BSP regarding to smaller diameters, you don't need to buy only from HILTI anymore, save money on your diamond tools!