Attachment, fastening, securing, hoisting, and tensioning devices and apparatus; articles for use in transferring loads; mobile fastener devices adapted to traverse a suspended safety line or rail; shock absorbing devices; deformable brackets; parts and fittings for all of the aforesaid goods-- heavy duty D-rings; tension indicators; cable supports; shock absorbers; entry and exit terminals; spacers; toggle bolts; anchors; steel cables; cable clamps; wire guides; clamps; couplers; cams; tense...