{"product_id":"lego-round-brick-2x2-3941","title":"LEGO® Part 3941 - Brick, Round 2 x 2 with Axle Hole","description":"\u003cp\u003eThe LEGO® Round Brick 2 x 2 with Axle Hole (Design ID 3941) is a versatile cylindrical building element that combines the appearance of a standard round brick with a central Technic-compatible axle hole. Available in multiple colour variants on this page, it is widely used for wheels, machinery, towers, engines, decorative details and custom LEGO® MOCs where both strength and rotational functionality are required.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Name:\u003c\/strong\u003e Round Brick 2 x 2 with Axle Hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign ID:\u003c\/strong\u003e 3941\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 2 x 2 studs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeature:\u003c\/strong\u003e Central axle hole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Cylindrical round brick\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuilding with LEGO® Round Brick 3941\u003c\/h2\u003e\n\n\u003cp\u003eThe integrated axle hole makes this part especially useful for functional builds. It can support rotating mechanisms, wheel hubs, decorative columns, machinery, engines and countless mechanical assemblies while maintaining the clean appearance of a round brick. Its larger 2 x 2 footprint also provides additional stability compared with smaller cylindrical elements.\u003c\/p\u003e\n\n\u003cp\u003eThis combination of structural strength and mechanical compatibility has made Design ID 3941 a popular component across many official LEGO® sets as well as advanced custom creations.\u003c\/p\u003e\n\n\u003ch2\u003eExplore More LEGO® Round Building Elements\u003c\/h2\u003e\n\n\u003cp\u003eBrowse our complete \u003ca href=\"\/collections\/lego-round-bricks\"\u003eLEGO® Round Bricks\u003c\/a\u003e collection for cylindrical building elements of every size, or explore our full range of \u003ca href=\"\/collections\/lego-bricks\"\u003eLEGO® Bricks\u003c\/a\u003e. Builders creating curved designs may also be interested in our \u003ca href=\"\/collections\/lego-macaroni-bricks\"\u003eLEGO® Macaroni Bricks\u003c\/a\u003e and \u003ca href=\"\/collections\/lego-dome-bricks\"\u003eLEGO® Dome Bricks\u003c\/a\u003e. For smaller cylindrical details, see the \u003ca href=\"\/products\/lego-round-brick-1x1-3062\"\u003eLEGO® Round Brick 1 x 1 (3062)\u003c\/a\u003e.\u003c\/p\u003e","brand":"LEGO","offers":[{"title":"Black","offer_id":50454357934413,"sku":"lego3941blacknew","price":0.4,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":50454357180749,"sku":"lego3941bluenew","price":0.49,"currency_code":"USD","in_stock":false},{"title":"Bright Green","offer_id":50454358720845,"sku":"lego3941brgreennew","price":1.72,"currency_code":"USD","in_stock":false},{"title":"Bright Light Blue","offer_id":50454358688077,"sku":"lego3941brlbluenew","price":1.76,"currency_code":"USD","in_stock":false},{"title":"Bright Light Yellow","offer_id":50454358557005,"sku":"lego3941brlyellownew","price":0.44,"currency_code":"USD","in_stock":true},{"title":"Bright 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