The HOLDRITE 117-WR Series No-Hub Fitting Restraints are designed to reinforce no-hub cast iron installations in accordance with the installation instructions of U.S. cast iron soil pipe manufacturers, CISPI Designation 301-18, 310-18, and the 2006 CISPI Installation Handbook. The 117-WR (12 in x 4 in – 15 in x 12 in) retains the Wye fitting onto the adjoining piping, in mid-span runs.. For these 12 in -15 in products, heavy duty steel pipe clamps and straps are used and require 60 ft/lbs of torque on pipe clamp bolts.