The Dayton Superior B1 Two-Strut Coil Tie and B2 Four-Strut Coil Tie, when used as inserts for lifting and handling thin wall precast elements, are extremely effective. Coil ties are available with an optional B3 Screw-on Coil for use with the B30 Screw-on Plastic Cone to set the insert back from the face of the concrete. Minimum spacing between inserts is twice the corner distance.