Stainless steel slotted tube fittings are available in exterior (Grade 316 Stainless Steel, Mirror Polished) and interior applications (Grade 304 Stainless Steel, Satin Finish). Slotted tube handrail fittings suitfor 25.4mm, 38.1mm, 42.4, 48.3, 50.8mm, 25x50mm, 40x40mm. , etc tubes.