Advertising screw (CM258) 1)Material:Stainless steel 2)Hollow core 3)Finish:Satin, ... )Various size with good quality Hollow Stainless steel advertising screw (CM258) Detailed Parameter: Item No.CM258MaterialStainless steelFinishSatin, PolishAvailable forGlass shelf supportingDiameter12 ... : www.gyxdwj.en.alibaba.com Hollow Stainless steel advertising screw (CM258)