※ This listing is for two blue packing rings only. Skater Water Bottle Packing Set for SKDC4 2-Way Stainless Steel Bottle Packing Rings P-SKDC4-PS Color: SKDC4 Inner Plug Size: Large = Diameter 4.2 x Height 0.6 cm, Lid Packing Ring = Diameter 3.6 x Height 0.5 cm Material: Silicone Dedicated parts for stainless steel bottles from "Skater". Set of inner plug packing rings, large and small, exclusively for model "SKDC4". When purchasing, please check the model number printed on the "Quality Label" on the back of the water bottle body to ensure compatibility. Use as a spare when the packing rings deteriorate or are lost.