... .2mm, 17mm, 18mm, 19mm, 20mm, 20.2mm, 21mm, 21.3mm, 22mm, 23mm, 24.2mm, 25mm, 25.4mm, 26.8mm, ... special length can be customized.5)Tolerancea) Outer diameter: ±0.2mmb) Thickness: ±0.02mmc) Length: ±5mm6) PolishingSatin, 400 Grit, 500Grit, ... be bundle without any logo.8) ApplicationHandrail, Railing, Staircase, Door, Window, Balcony, Fence, Bench, Furniture, etc. Stainless Steel Slot Groove Oval Tube