Your search for "concrete drilling machine" revealed the following:

3M™ Disc Sander 28329, 2 in .5 HP 12,000 RPM, 1 ea/Case

Our 3M™ Disc Sanders are lightweight and rugged, designed with a high power-to-weight ratio to help you get more work done in less time – and with less strain. 3M™ Gripping Material and a 97-degree angle head allow more comfort and control. Great for grinding, blending, weld leveling, metal prep...

Bosch-accessories 2608601366 Diamond wet core cutter 1 1/4" UNC Best for Concrete

Technical data Part no. 2 608 601 366 Packaging type Paper / Cardboard / Corrugated board - Packaging, box, no Euro hole Pack quantity 1 Minimum order quantity 1 Description Diamond wet core cutter 1 1/4' UNC Details Diameter mm 102.0 Working length mm 450.0 Number of segments 9 Segment...