VTG387 - Square Concrete Stool,3.25in Concrete Core Drill Bit (Open-Head),SRM Concrete 8-in W x 8-in H x 16-in L Concrete Block Cored Concrete Block in the Concrete Blocks department at Lowes.com,Bonner Springs, KS Archives - Rinker Materials,Bonner Springs, KS Archives - Rinker Materials