Sioux chief 525 series strong arm with lock block pre-assembled bracketing system shall be used where necessary for securing cts water supply stub outs when penetrating a wall. Bracket shall be corrosion resistant with twisted ends to mount to the surface either a wood or metal stud wall. System shall include approved hardware for fastening brackets to stud wall. System shall include sliceable, plastic block device to position and secure cts stub out at any desired location. Each block shall include two screws for tightening. When screws on blocks are tightened, compression of blocks prevents lateral movement on brackets and simultaneously compresses on tube to prevent stub out movement. Lock blocks shall be compatible with copper, PVC, or pex tube.