MODEL:ER16Type��oCNC milling Lathe ToolColor��oSilverRun-Out Tolerance:0.015MM (0.0006")MATERIAL: High Grade 1065 Carbon SteelGripping Range: 1mm to 10mmPrecision ground and hand inspected. Only the very best materials and grinding techniques used!Package included��o10 pcs ER16 ColletsSize:1mm，2mm，3mm，4mm，5mm，6mm，7mm，8mm，9mm，10mmNOTE:As the effect varies from monitor to monitor， there is irrevocable slightly difference in colors between the color showed on your monitor and the real one， So if dear you can not accept this very little difference， be cautious before you making the orders.thanks for understanding.