Stainless Steel Drinking metal Straws Reusable for 20 oz 30oz Tumbler 1.material : real food grade 18/8-304 Â 2.Advantage : health , eco-friendly,durable, wash safe . 3.color : silver,gold , rose gold , blue, purple, black,rainbow for choose 4.Surface: bright & smooth 5.Size: 6mm , 8mm , 12 mm * 140mm,215 mm ,264mm,266mm for custom