It is smaller than expected, but that can be seen as a positive. It offers similar functionality to much larger vehicles of this type, but doesn’t take up masses of space on the shelf. The finished model looks excellent, the digging feature is fun to use (once mastered) and it retails for a very respectable price. Overall, 42121 Heavy-Duty Excavator is a set we really… dig. (I’ll get my coat.)

LEGO® components meet stringent industry standards to ensure they are consistent, compatible and connect reliably every time – it's been that way since 1958.Whether it’s a birthday, Christmas, or ‘just because’ gift, young construction fans will love building and exploring this 2-in-1 LEGO® Technic™ Heavy-Duty Excavator (42121) toy set. Looking for a special gift for kids who love construction toy sets? This 2-in-1 LEGO® Technic™ Heavy-Duty Excavator (42121) toy has plenty of features for hours of creative play. Boys and girls aged 8 and up will enjoy an immersive building challenge before exploring the digger toy's realistic features. Some may be a little disappointed with the overall size of the finished model, but at this price it seems like a decent deal for what you get. — Pictures —

This kids' excavator toy model measures over 9 in. (23 cm) high, with arm up,14.5 in. (37 cm) long, with arm fully extended, and 4 in. (11 cm) wide.The LEGO Technic universe offers advanced building toys for LEGO fans ready for their next challenge. With realistic mechanisms, these rewarding sets are a great way to introduce kids to the world of engineering.