Lego System and Technic are not 100% compatiblehttps://casadebricks.com/wp-content/uploads/2021/05/Stressing-The-Elements.pdf?mc_cid=888fe56237&mc_eid=4b7466b9c7 by bookofjoe • 4 years ago 1 1 4 years agoCAcasadebricks.com