![LEGO Technic Heavy-Duty Excavator 42121 Toy Building Kit; A Cool Birthday or Anytime Gift for Kids Who Enjoy Construction Toys; The 2-in-1 Design Gives Hours More Building Fun, New 2021 (569 Pieces) : LEGO Technic Heavy-Duty Excavator 42121 Toy Building Kit; A Cool Birthday or Anytime Gift for Kids Who Enjoy Construction Toys; The 2-in-1 Design Gives Hours More Building Fun, New 2021 (569 Pieces) :](https://m.media-amazon.com/images/I/81D1BnrgW4L.jpg)
LEGO Technic Heavy-Duty Excavator 42121 Toy Building Kit; A Cool Birthday or Anytime Gift for Kids Who Enjoy Construction Toys; The 2-in-1 Design Gives Hours More Building Fun, New 2021 (569 Pieces) :
![LEGO Instructions | Technic | 42121 | Heavy Duty Excavator | Tracked Tractor | Alternate Build - YouTube LEGO Instructions | Technic | 42121 | Heavy Duty Excavator | Tracked Tractor | Alternate Build - YouTube](https://i.ytimg.com/vi/nxhsVmut8EE/maxresdefault.jpg)
LEGO Instructions | Technic | 42121 | Heavy Duty Excavator | Tracked Tractor | Alternate Build - YouTube
![LEGO Technic Heavy-Duty Excavator 42121 Toy Building Kit; A Cool Birthday or Anytime Gift for Kids Who Enjoy Construction Toys; The 2-in-1 Design Gives Hours More Building Fun, New 2021 (569 Pieces) : LEGO Technic Heavy-Duty Excavator 42121 Toy Building Kit; A Cool Birthday or Anytime Gift for Kids Who Enjoy Construction Toys; The 2-in-1 Design Gives Hours More Building Fun, New 2021 (569 Pieces) :](https://m.media-amazon.com/images/I/71h5vhWyURL._AC_UF350,350_QL80_.jpg)