ITB24X24CMCP/BN/BM Towel Bar Back to Back CTC 24"X24" With Metal WasherITB24X24CMCP BN BM Towel Bar Back to Back CTC 24 INCH x 24 INCH With Metal Washer With gaskets to prevent glass damage Perfect handling design Can be installed glass, wood or aluminum metal doors Can be used in shower door, glass office doors, porch doors, Wood doors, barn doors etc. Cut Out Hole required 1 2" (12mm) Diameter Solid Brass