Product Information The M in the name of the Lego Power Function M-Motor stands for a medium strength motor. This Lego technic motor provides speed to make things move faster. Specification Net weight:42g Color:As the picture show Size:10*10*8cm Plastic Block Shape:Self-Locking BricksBarcode Age Range:> 3 years old Model Number:BLOCK Plastic Type:ABS Material:Plastic Compatible 1:20053 20006 20002 Compatible 2:20013 20021 20008 Compatible 3:20076 20004 23011 Compatible 4:20020 20011 20030 Compatible 5:20019 37001 02010 Specifications: Compatible with any power function model, this Lego motor requires a battery box. This easy-to-use Lego technic motor has a long life as it is made up of durable parts. The small size of the Lego motor makes it easy to fit into toy trains, which eventually provides fun to the kids. Package Included: 1*8883 motor Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Thanks for your understandings.