The load carrying capacity of any cast-in-place concrete insert is largely dependent upon the ability of the insert to draw upon the tensile strength of the mass of concrete within which it is embedded. The B18 Single Flared Coil Loop Insert makes effective use of this principle by increasing the depth and width of concrete embedment. B18 inserts are available with an optional B3 Screw-on Coil for use with the B30 Screw-on Plastic Cone which acts to set the insert back from the face of the concrete. Minimum spacing between inserts is twice the corner distance.