This CRL Post Fitting is used to attach two inline glass panels to a structural center post. Comes with two types of attachment hardware: a M14-2 x 101.6 millimeter (4 inch) stainless steel threaded stud with three matching nuts and washers; a M14-2 x 30.2 millimeter (1-3/16 inch) stainless steel threaded stud for use with CRL Post Adaptors. For companion fitting use Cat. No. GRP2VBS or GRP2VPS Fittings.