Product Description Impact-resistant precision carbide blade made of special alloy. Special soldering (1100° C) and HST thermal treatment for heavy duty application. Patented reinforced chamfers for optimal drilling of reinforced concrete. High-volume spiral coils for quickly transporting drilling dust. Drill made of chromium steel - perfectly fitting for all drilling hammers with SDS-plus mounting system - AEG, B+D, Bosch, Fein, Hilti TE (TE-C), Metabo, Hitachi, Makita and others with suitable slot locking device. Applications: concrete, clinker, masonry, stone, granite, hard-baked tiles, marble. With certification mark, which guarantees that our drills comply with the requirements of the "Institute for Bautechnik" concerning carbide hammer drills which are used to drill dowel holes. Set Contains: 1 x Connex COX971997 280 x 450mm SDS--Plus Hammer Drills