Lego makes a square brick and a cylindrical brick, each with just one peg and hole. What are the dimensions of these bricks? - Quora
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BrickLink - Part 4070 : LEGO Brick, Modified 1 x 1 with Headlight [Brick, Modified] - BrickLink Reference Catalog
Lego makes a square brick and a cylindrical brick, each with just one peg and hole. What are the dimensions of these bricks? - Quora
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BrickLink - Part 30241 : LEGO Brick, Modified 1 x 1 with Open U Clip (Vertical Grip) - Solid Stud [Brick, Modified] - BrickLink Reference Catalog
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LEGO Classic 1x1 Brick Multi-Color Changing Integrated LED Silicone Night Light, Yellow-LP42 - The Home Depot
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BrickLink - Part 3062b : LEGO Brick, Round 1 x 1 Open Stud [Brick, Round] - BrickLink Reference Catalog
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BrickLink - Part 4733 : LEGO Brick, Modified 1 x 1 with Studs on 4 Sides [Brick, Modified] - BrickLink Reference Catalog
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