Sphenoid bone - internal view There are four main parts to the sphenoid bone: the body (corpus), the lesser and greater wings (alae minores et majores) and the pterygoid processes. The body is the most centrally positioned portion. Anteriorly it contributes to the nasal cavity, laterally it builds the medial wall of the optic canal.
The anchor you chose will depend on the type of anchoring you do. Cruising anchors are larger plow or claw anchors capable of holding boats to various bottoms. Kedging, Forfjord and Workboat anchors are used on commercial vessels.
Commercial roofs call for a particular kind of roof anchor. In most cases you want to use a non-penetrating fall protection anchor such as a weighted anchor point or a parapet clamp. If you are installing long term, permanent anchor points, the CB anchor posts can make great tie-off connections for single-user or lifeline scenarios.