Catalog: Parts: Brick, Round: 3941: Known Colors: In Technic Category
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Brick, Round 2 x 2 with Axle Hole

Part No: 3941 Name: Brick, Round 2 x 2 with Axle Hole
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This Part appears in at least the following items:

[ List | List with Images | Thumbnail Gallery | Summary ]

 Qty 
  Item No  Description   Year 
 Image 
Appears As Regular:
  White:
 2 in 42129-1 (Inv)4x4 Mercedes-Benz Zetros Trial Truck2021Yes
 16 in 8868-1 (Inv)Air Tech Claw Rig1992Yes
 2 in 42069-1 (Inv)Extreme Adventure2017Yes
 5 in 42180-1 (Inv)Mars Crew Exploration Rover2024Yes
 6 in 42158-1 (Inv)NASA Mars Rover Perseverance2023Yes
 2 in 30682-1 (Inv)NASA Mars Rover Perseverance polybag2024Yes
 1 in 42082-1 (Inv)Rough Terrain Crane2018Yes
 2 in 8480-1 (Inv)Space Shuttle1996Yes
  Light Bluish Gray:
 2 in 42039-1 (Inv)24 Hours Race Car2015Yes
 6 in 42130-1 (Inv)BMW M 1000 RR2022Yes
 5 in 42023-1 (Inv)Construction Crew2014Yes
 2 in 8052-1 (Inv)Container Truck2010Yes
 3 in 8291-1 (Inv)Dirt Bike2008Yes
 8 in 42128-1 (Inv)Heavy-duty Tow Truck2021Yes
 18 in 9397-1 (Inv)Logging Truck2012Yes
 12 in 42078-1 (Inv)Mack Anthem2018Yes
 8 in 42180-1 (Inv)Mars Crew Exploration Rover2024Yes
 7 in 8041-1 (Inv)Race Truck2010Yes
 7 in 42041-1 (Inv)Race Truck {Reissue}2015Yes
 3 in 8263-1 (Inv)Snow Groomer2009Yes
 1 in 42155-1 (Inv)The Batman - Batcycle2023Yes
 18 in 8285-1 (Inv)Tow Truck2006Yes
  Light Gray:
 6 in 8479-1 (Inv)Barcode Multi-Set1997Yes
 1 in 8860-1 (Inv)Car Chassis (Auto Chassis)1980Yes
 4 in 8842-1 (Inv)Go-Kart1986Yes
 1 in 8414-1 (Inv)Mountain Rambler1997Yes
 1 in 8412-1 (Inv)Nighthawk1995Yes
 1 in 8458-1 (Inv)Silver Champion2000Yes
 1 in 8480-1 (Inv)Space Shuttle1996Yes
 1 in 8849-1 (Inv)Tractor1986Yes
 1 in 8055-1 (Inv)Universal Set1986Yes
  Dark Bluish Gray:
 3 in 42038-1 (Inv)Arctic Truck2015Yes
 5 in 42023-1 (Inv)Construction Crew2014Yes
 2 in 42079-1 (Inv)Heavy Duty Forklift2018Yes
 1 in 42170-1 (Inv)Kawasaki Ninja H2R Motorcycle2024Yes
 102 in 42100-1 (Inv)Liebherr R 98002019Yes
  Black:
 2 in 42129-1 (Inv)4x4 Mercedes-Benz Zetros Trial Truck2021Yes
 2 in 8660-1 (Inv)Arctic Rescue Unit1986Yes
 1 in 8862-1 (Inv)Backhoe1989Yes
 1 in 42028-1 (Inv)Bulldozer2014Yes
 24 in 42131-1 (Inv)Cat D11 Bulldozer2021Yes
 1 in 8258-1 (Inv)Crane Truck2009Yes
 1 in 8829-1 (Inv)Dune Blaster1994Yes
 3 in 8284-1 (Inv)Dune Buggy / Tractor2006Yes
 1 in 8294-1 (Inv)Excavator2008Yes
 3 in 8265-1 (Inv)Front Loader2009Yes
 1 in 8264-1 (Inv)Hauler2009Yes
 5 in 42043-1 (Inv)Mercedes-Benz Arocs 32452015Yes
 4 in 8110-1 (Inv)Mercedes-Benz Unimog U 4002011Yes
 6 in 8275-1 (Inv)Motorized Bulldozer2007Yes
 1 in 8043-1 (Inv)Motorized Excavator2010Yes
 1 in 8825-1 (Inv)Night Chopper1990Yes
 1 in 8854-1 (Inv)Power Crane1989Yes
 1 in 8432-1 (Inv)Supersonic Car1998Yes
 3 in 8295-1 (Inv)Telescopic Handler2008Yes
 4 in 8865-1 (Inv)Test Car1988Yes
 7 in 8285-1 (Inv)Tow Truck2006Yes
 3 in 8284-2 (Inv)Tractor / Dune Buggy2006Yes
 3 in 8063-1 (Inv)Tractor with Trailer2009Yes
 1 in 8428-1 (Inv)Turbo Command1998Yes
 1 in 42030-1 (Inv)Volvo L350F Wheel Loader2014Yes
  Red:
 4 in 42129-1 (Inv)4x4 Mercedes-Benz Zetros Trial Truck2021Yes
 1 in 42097-1 (Inv)Compact Crawler Crane2019Yes
 3 in 42111-1 (Inv)Dom's Dodge Charger2020Yes
 2 in 42069-1 (Inv)Extreme Adventure2017Yes
 1 in 42000-1 (Inv)Grand Prix Racer2013Yes
 16 in 42100-1 (Inv)Liebherr R 98002019Yes
 8 in 42180-1 (Inv)Mars Crew Exploration Rover2024Yes
 3 in 42077-1 (Inv)Rally Car2018Yes
  Reddish Brown:
 20 in 42094-1 (Inv)Tracked Loader2019Yes
 10 in 8049-1 (Inv)Tractor with Log Loader2010Yes
  Tan:
 5 in 42023-1 (Inv)Construction Crew2014Yes
  Yellow:
 1 in 8858-2 (Inv)Auto Engines1980Yes
 1 in 858-1 (Inv)Auto Engines1980Yes
 8 in 8860-1 (Inv)Car Chassis (Auto Chassis)1980Yes
 8 in 8844-1 (Inv)Helicopter1981Yes
 8 in 8275-1 (Inv)Motorized Bulldozer2007Yes
 1 in 8852-1 (Inv)Robot1987Yes
 2 in 8299-1 (Inv)Search Sub1997Yes
 2 in 8250-1 (Inv)Search Sub1997Yes
 9 in 8865-1 (Inv)Test Car1988Yes
 8 in 8450-1 (Inv)The Mission2000Yes
  Blue:
 6 in 42111-1 (Inv)Dom's Dodge Charger2020Yes
 4 in 42180-1 (Inv)Mars Crew Exploration Rover2024Yes
 4 in 42064-1 (Inv)Ocean Explorer2017Yes
 1 in 42178-1 (Inv)Surface Space Loader LT782024Yes
  Trans-Red:
 2 in 42125-1 (Inv)Ferrari 488 GTE AF CORSE #512021Yes
  Trans-Neon Orange:
 1 in 8284-1 (Inv)Dune Buggy / Tractor2006Yes
 3 in 8421-1 (Inv)Mobile Crane2005Yes
 1 in 8284-2 (Inv)Tractor / Dune Buggy2006Yes
 1 in 8063-1 (Inv)Tractor with Trailer2009Yes
  Trans-Orange:
 1 in 42114-1 (Inv)6x6 Volvo Articulated Hauler2020Yes
 1 in 42079-1 (Inv)Heavy Duty Forklift2018Yes
 2 in 42043-1 (Inv)Mercedes-Benz Arocs 32452015Yes
 2 in 42108-1 (Inv)Mobile Crane2020Yes
 1 in 42082-1 (Inv)Rough Terrain Crane2018Yes
  Trans-Yellow:
 1 in 8286-1 (Inv)3-In-1 Car1996Yes
 1 in 8868-1 (Inv)Air Tech Claw Rig1992Yes
 1 in 8862-1 (Inv)Backhoe1989Yes
 1 in 8069-1 (Inv)Backhoe Loader2011Yes
 1 in 8455-1 (Inv)Back-hoe Loader (Backhoe)2003Yes
 2 in 8258-1 (Inv)Crane Truck2009Yes
 1 in 8451-1 (Inv)Dumper2003Yes
 1 in 8853-1 (Inv)Excavator1988Yes
 1 in 8294-1 (Inv)Excavator2008Yes
 1 in 8416-1 (Inv)Forklift2005Yes
 1 in 8248-1 (Inv)Forklift1998Yes
 1 in 8835-1 (Inv)Forklift1989Yes
 1 in 8872-1 (Inv)Forklift Transporter1993Yes
 1 in 8463-1 (Inv)Forklift Truck2001Yes
 1 in 8439-1 (Inv)Front End Loader2004Yes
 1 in 8828-1 (Inv)Front End Loader1992Yes
 1 in 8235-1 (Inv)Front End Loader1995Yes
 1 in 8453-1 (Inv)Front-End Loader2003Yes
 1 in 8453-2 (Inv)Front-End Loader, Black Box2004Yes
 1 in 8264-1 (Inv)Hauler2009Yes
 2 in 8110-1 (Inv)Mercedes-Benz Unimog U 4002011Yes
 1 in 8043-1 (Inv)Motorized Excavator2010Yes
 2 in 8431-1 (Inv)Pneumatic Crane Truck2002Yes
 2 in 8460-1 (Inv)Pneumatic Crane Truck1995Yes
 2 in 8438-1 (Inv)Pneumatic Crane Truck2003Yes
 1 in 8837-1 (Inv)Pneumatic Excavator1992Yes
 1 in 8459-1 (Inv)Pneumatic Front End Loader1997Yes
 1 in 8464-1 (Inv)Pneumatic Front End Loader2001Yes
 1 in 8443-1 (Inv)Pneumatic Log Loader1996Yes
 1 in 8042-1 (Inv)Pneumatic Set1993Yes
 1 in 8854-1 (Inv)Power Crane1989Yes
 1 in 8850-1 (Inv)Rally Support Truck1990Yes
 1 in 8858-1 (Inv)Rebel Wrecker1994Yes
 1 in 8283-1 (Inv)Telehandler (Front End Loader)2006Yes
 1 in 8295-1 (Inv)Telescopic Handler2008Yes
 8 in 8285-1 (Inv)Tow Truck2006Yes
 1 in 8049-1 (Inv)Tractor with Log Loader2010Yes
 2 in 8436-1 (Inv)Truck2004Yes
 1 in 8044-1 (Inv)Universal Pneumatic Set1989Yes
 1 in 8074-1 (Inv)Universal Set with Flex System1991Yes
 1 in 8062-1 (Inv)Universal Set with Storage Case1994Yes
  Trans-Dark Blue:
 1 in 8230-1 (Inv)Coastal Cop Buggy / Police Buggy / Miami Police Patrol / Miami Beach Patrol1996Yes
 2 in 8454-1 (Inv)Rescue Truck2003Yes
  Trans-Light Blue:
 8 in 42040-1 (Inv)Fire Plane2015Yes
 10 in 42152-1 (Inv)Firefighter Aircraft2023Yes

Summary:

 Color  In   Total Qty 
Appears As Regular:
 White 8  36 
 Light Bluish Gray 14  100 
 Light Gray 9  17 
 Dark Bluish Gray 5  113 
 Black 25  81 
 Red 8  38 
 Reddish Brown 2  30 
 Tan 1  5 
 Yellow 10  48 
 Blue 4  15 
 Trans-Red 1  2 
 Trans-Neon Orange 4  6 
 Trans-Orange 5  7 
 Trans-Yellow 41  54 
 Trans-Dark Blue 2  3 
 Trans-Light Blue 2  18 

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