DOPOW Wall Drill Bit Hole Saw Set with SDS PLUS (SDS+) Shaft + Hole Saw + Core Drill Bit for Masonry Concrete Brick Stone 3.55in90mm 1pc 330mm Long Shaft with SDS plus (SDS+) 1pc 90mm Carbide Tip Masonry Concrete Brick Cement Stone Wall Drill Hole Saw Cutting Tool 1pc Masonry Pilot Drill Bit and Screw. When you drill Concrete Brick Stone, should add water