Back to Slope 45° 2 x 2
Basic Building Set (720-1) is a Basic LEGO set released in 1985 with 339 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Basic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 1 minifigure and 123 unique part types.
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Minifigures in Basic Building Set
Parts in this set
123 parts · page 1 of 3 · updating…
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Bar 1 x 4 x 2 with Studs4083 · ×1 · Light Gray -
Baseplate 16 x 323857 · ×1 · Light Gray -
Boat, Mast 2 x 2 x 9 2/3 Bar with Slot on Top and 2 Finger Hinge on Two Sides4318 · ×1 · White -
Brick 1 x 13005 · ×4 · Red -
Brick 1 x 13005 · ×14 · White -
Brick 1 x 13005 · ×6 · Blue -
Brick 1 x 13005 · ×4 · Trans-Clear -
Brick 1 x 23004 · ×10 · White -
Brick 1 x 23004 · ×6 · Blue -
Brick 1 x 23004 · ×5 · Red -
Brick 1 x 2 with Black Grill Print3004pr9981 · ×1 · Red -
Brick 1 x 33622 · ×4 · Red -
Brick 1 x 33622 · ×8 · White -
Brick 1 x 33622 · ×6 · Blue -
Brick 1 x 43010 · ×6 · White -
Brick 1 x 43010 · ×4 · Blue -
Brick 1 x 43010 · ×2 · Red -
Brick 1 x 63009 · ×4 · White -
Brick 1 x 63009 · ×6 · Blue -
Brick 1 x 63009 · ×2 · Red -
Brick 1 x 83008 · ×2 · White -
Brick 1 x 83008 · ×2 · Blue -
Brick 2 x 103006 · ×1 · White -
Brick 2 x 2 without Inside Ridges3003a · ×2 · Blue -
Brick 2 x 2 without Inside Ridges3003a · ×2 · Red -
Brick 2 x 2 without Inside Ridges3003a · ×5 · White -
Brick 2 x 3 without Cross Supports3002a · ×2 · Red -
Brick 2 x 3 without Cross Supports3002a · ×2 · White -
Brick 2 x 43001 · ×2 · White -
Brick 2 x 43001 · ×1 · Blue -
Brick 2 x 43001 · ×5 · Red -
Brick Round 1 x 1 Open Stud3062b · ×6 · Light Gray -
Brick Round 2 x 2 with Axle Hole3941 · ×4 · Yellow -
Brick Special 1 x 1 with Headlight4070 · ×4 · Red -
Brick Special 1 x 1 with Headlight4070 · ×2 · White -
Construction Vehicle Bucket 2 x 3 Curved Bottom, Hollow, with Hinge 2 Fingers4626 · ×1 · Yellow -
Door 1 x 3 x 1 Left3822 · ×1 · Red -
Door 1 x 3 x 1 Right3821 · ×1 · Red -
Door 1 x 3 x 2 Left3189 · ×1 · Red -
Door 1 x 3 x 2 Right3188 · ×1 · Red -
Door 1 x 4 x 5 with 4 Panes, Squared Base3861b · ×1 · Red -
Door Sliding - Type 14511 · ×2 · White -
![Flag 4 x 1 Wavy [First Wave Left]](https://cdn.rebrickable.com/media/parts/ldraw/4/4495a.png)
Flag 4 x 1 Wavy [First Wave Left]4495a · ×1 · Red -
Glass for Window 1 x 4 x 33855 · ×2 · Trans-Clear -
Hinge Brick 1 x 2 Base3937 · ×1 · Red -
Hinge Brick 1 x 2 Top Plate Thin3938 · ×1 · Light Gray -
![Hinge Plate 1 x 2 with 3 Fingers [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/7/4275a.png)
Hinge Plate 1 x 2 with 3 Fingers [Solid Studs]4275a · ×3 · Light Gray -
![Hinge Plate 2 x 5 with Large Hole [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/1/3149ec01.png)
Hinge Plate 2 x 5 with Large Hole [Complete Assembly]3149bc01 · ×1 · Blue