3M DBI-SALA Advanced 8516563 Davit Component, Center Mount Sleeve Davit Base, Stainless Steel, For Advanced Offset Davit Mast, Stainless Steel Eliminates metal to metal contact improving performance and ensuring smooth consistant davit mast rotation Designed to allow installed davit mast to rotate freely for maximum flexibility and freedom of movement Install with tools found in most facillities reducing time and cost of set-up Stainless steel offers maximum corrosion resistance to stand-up to the harshest environments, providing added longevity Center mount sleeve davit base, stainless steel, for Advanced offset davit mast