MA1 Modular Rig Double Bar (Thick) - 1.9m After selecting the uprights, you will need these crossbeams in between to fill out your cross rig frame. This is a 1.9m Double Bar Cross Beam, boasting 4mm thick steel with cut holes ready to bolt straight into your cross rig uprights. Ideal for functional strength training, cross rigs are an impressive look for your gym and your clients will be eager to give it a shot. Now you can custom build your own with your space and budget.