Classic Trial Size (4284-1) is a Classic Basic LEGO set released in 1999 with 123 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Classic 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 46 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1999 (27 years ago — may be retired)
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Catalog scale
123 parts listed · 46 inventory lines tracked
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Minifigures
1 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~312 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Minifigures in Classic Trial Size
Parts in this set
46 parts · updating…
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Antenna 1 x 4 with Rounded Top3957a · ×1 · Yellow -
Baseplate 8 x 163865 · ×1 · Green -
Brick 1 x 13005 · ×4 · Red -
Brick 1 x 13005 · ×6 · Yellow -
Brick 1 x 13005 · ×6 · Blue -
Brick 1 x 13005 · ×6 · White -
Brick 1 x 1 with Simple Eye Black and White Print3005pr9996 · ×2 · Red -
Brick 1 x 23004 · ×4 · Blue -
Brick 1 x 23004 · ×4 · White -
Brick 1 x 23004 · ×2 · Red -
Brick 1 x 23004 · ×4 · Yellow -
Brick 1 x 33622 · ×2 · Blue -
Brick 1 x 43010 · ×2 · Yellow -
Brick 1 x 43010 · ×4 · Blue -
Brick 1 x 43010 · ×4 · White -
Brick 1 x 43010 · ×2 · Red -
Brick 2 x 23003 · ×2 · Red -
Brick 2 x 23003 · ×2 · Yellow -
Brick 2 x 23003 · ×2 · Blue -
Brick 2 x 23003 · ×2 · White -
Brick 2 x 43001 · ×1 · White -
Brick 2 x 43001 · ×1 · Blue -
Brick Round 1 x 1 Open Stud3062b · ×8 · White -
Brick Sloped 33° 3 x 14286 · ×2 · Blue -
Brick Sloped 33° 3 x 23298 · ×4 · Blue -
Brick Sloped 33° 3 x 2 with Red on Yellow Triangles Print3298pr0005 · ×2 · Blue -
Brick Sloped 33° 3 x 43297 · ×2 · Blue -
Brick Sloped 45° 2 x 23039 · ×2 · Blue -
Brick Sloped 45° 2 x 23039 · ×1 · Trans-Clear -
Brick Sloped Inverted 34° 3 x 1 without Internal Stopper4287a · ×2 · Blue -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366023.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Blue -
Brick Special 1 x 1 with Headlight4070 · ×2 · Blue -
Brick Special 2 x 2 with 2 Pins and Axle Hole30000 · ×2 · Dark Gray -
Fence Lattice 1 x 4 x 13633 · ×2 · Yellow -
Plant, Flower - Small3742 · ×3 · Red -
Plant, Flower Stem3741 · ×1 · Green -
Plate 1 x 43710 · ×2 · Red -
Plate 2 x 43020 · ×2 · Red -
Plate 2 x 83034 · ×2 · Red -
Plate 4 x 103030 · ×1 · Red -
Propeller 4 Blade 5 Diameter with Rounded Ends, Open Hub2479 · ×1 · Blue -
Steering Stand 1 x 2 with Black Steering Wheel3829c01 · ×1 · Yellow -
Tile Special 1 x 2 Grille with Bottom Groove2412b · ×2 · Black -
Tile Special 2 x 2 with Top Pin2460 · ×1 · Yellow -
Tyre Offset Tread 24 x 83483 · ×4 · Black -
Wheel Freestyle with 2 x 2 Studs and Pin Hole6248 · ×4 · Red