Rail Base Fitting 2-3/4 Round Base 90deg 316 Stainless Steel - 1 ODThese Round Rail Base Fittings include set screws where appropriate. Set screws can be purchased separately (299999-1). Requires 1/8 Allen wrench to install. Constructed of corrosion resistant investment cast 316 stainless steel. Installs with three FH fasteners (not included). *Stainless tubing with a wall thickness of 0.049"