3M™ DBI-SALA® Davit Arm Systems are designed for manhole and confined space entry/retrieval applications. The Davit Arm and Mast units are constructed of lightweight materials including high-strength aluminium. The davit pivots for ease-of-rescue and has adjustment for overhead clearance restrictions. The Davit Arm adjusts to fit most standard entries. Many other portable and fixed bases are available to suit any job site need.