Thor 9mm Helical ties are available in a variety of standard lengths and but may be supplied in custom lengths to order. Used to secure many types of masonry to varying substrates the Thor 9mm Helical ties may be used with our proprietary Thor DU cementitious bonding agent where deep masonry embedment is required or when the masonry exhibits inconsistent quality. Longer custom-cut lengths may be required and used to secure bowed walls to either a pair of parallel floor joists or into the floor joists end grain.