Drilax 1 3/4 inch Diamond Brick Concrete Block Masonry Hole Saw Heavy Duty Wet Dry Use 1-3/4 inch 1.75 inch Single Pack: Amazon.com: Industrial & Scientific
Cinder Block Dimensions Chart and FAQ (65 Cinder Block Sizes and Shapes) - Home Stratosphere
4-in x 8-in x 16-in Cap Concrete Block in the Concrete Blocks department at Lowes.com
Amazon.com: Acacia Grove Mini Cinder Blocks, 24 Pack, 1/12 Scale: Toys & Games
Midwest Products Group 4-in x 8-in x 16-in Standard Cored Concrete Block in Gray | MBH04RN00000 | Concrete blocks, Breeze blocks, Concrete block retaining wall
Amazon.com: Acacia Grove Mini Cinder Blocks with Pallet, 1/12 Scale (24 Pack): Toys & Games