Adapter from WEFEX for the use of 1 1/4 inch internal thread drill bits on Hilti core drills as well as core drilling systems with a DD-BL shank. Features: drill bit adapter suitable for HILTI core drills with DD-BL shank - for drill bits with 1 1/4 inch female thread connection - made from one piece - DD-BL, with pinion (21 teeth inside) + outer left thread - drill side: 1 1/4 inch male thread / R1/2 inch IG, SW41 - e.g. suitable for HILTI core drills DD200 + DD160E + DD250E - Length: 114 mm