Sea-Dog Stainless Steel Hand Rail TeesSea Dog hand rail tee fittings are constructed of corrosion-resistant investment cast 316 stainless steel and are available in three different options. Features: Investment Cast 316 Stainless Steel; Stainless Tube Wall Thickness .049"; Specifications: S-D-290600-1; 60 Degree Universal Tee; 7/8" O.D. Tube; S-D-290901-1; 90 Degree Universal Tee; 1" O.D. Tube; S-D-291600; 60 Degree Tee - Left Hand (Port); Inside Set Screws; 7/8" O.D. Tube;