MA1 Modular Rig Single Bar - 1.1m After picking out your uprights, you will need cross beams to fill out your custom cross rig. Cross beams come in single or doubles in 1.1 or 1.8m depending on your needs. This is a Single 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.