telescopic aluminum tube 6063-T6.6061,6082 8mm, 10mm 15mm.acorrding to customer requires Length:6",12".18",22" anodized sli aluminum rods used finsh appliaction8mm, 10mm 15mm.acorrding to customer requiresLength:6",12".18",22"Tolerance :+/-0.15Standard : ASTM anodized sliver, black.Tooling lead time:10 daysMass order lead time: 30 days-60 days telescopic aluminum tube