Smith-Blair, Inc, a Xylem Brand.

Smith-Blair - Model 225 - Single Band Full Circle Repair Clamp - Brochure

Cam-Locks are wedges in a pivoting linkage used to lock a fitting onto a piece of pipe. As wedges are tightened down in the installation, specially ctesigned `breakaway` nutstwet off, leaving the restraint permanently engaged with the pipe.