MEGA BLOKS Struxx Size It Up Tube With Instructions & Approximately 100 Pieces | eBay!Mega Bloks Struxx Size It Up! Basixx 20X Struxx Size It Up! Building Set - good condition Includes instruction booklet with building ideas For larger and STRUXX MEGA BLOKS Size it Up! 6001 Robotrixx Instructions - £0.99. FOR SALE! Original set has 619 piecesGoods were donated to our charity shop so we cannot parts list in the instruction manual (which isincluded). Includes all the original figures andaccessories No broken.MEGA BLOKS Struxx Size It Up Tube With Manuals for Mega Bloks Struxx. Below you can find all Mega Bloks Struxx sets for which we have building instructions available. Also view the frequenty asked Need building instructions for your Mega Bloks set 6001 Struxx Robotrixx? Below you can view and download the PDF building instructions for free.