... S, type-304, stainless steel with satin finish. 16-gauge (1.6mm), 1-1/4" (30mm) square ... tubing and 18-gauge (1.2mm), 1" (25mm) diameter seamless tubing.Mounting ... -8 S, type-304, heavy-gauge stainless steel.Spring — 17-7, type-301, 24-gauge (0.6mm) stainless steel. Spot ... -welded to baseplate.Guide Bracket — 18-8 S, type-304, 16-gauge ( ...