3M DBI-SALA 2103670 U-Bolt Roof Anchor (Permanent), Fits Up To 2X8, Silver Makes attaching to the anchorage structure simple, fast and easy for added worker satisfaction and productivity Specialized fall protection system for residential or commercial wood frame structures keeps you safe and secure Everything required to install is included, simply place U-bolt over roof truss and install and tighten the bolts and clamp Provides a tie-off point for the contractor during construction, and also the homeowner for future maintenance of the roof Permanent U-bolt roof anchor with integral D-ring, flashing and cap, fits up to 2x8 roof member Permanent roof anchor for open trusses, joists and rafters Complete with integral D-ring anchorage point Weather tight cap protects the anchor from corrosion by sealing it from the environment The cap hides the anchor providing the homeowner with an aesthetically pleasing roof line Simply install by clamping onto joist, rafter, etc. (roof member)