Dwk Life Sciences Wheaton Stoppers For Serum Bottles And Vials: Snap-on Stopper,Gray, Butyl Rubber, For Use With: Fits 1.3cm I.d., 2cm O.d. Mouth Of Serum Bottles And Vials, Autoclavable: Yes, Diameter Inner: 2 Cm, Hardness: 45 Durometer,Snap-on St
Dwk Life Sciences Wheaton Stoppers For Serum Bottles And Vials, Red, Straight-plug Style; Rubber, For Use With: Fits 1.3mm I.d., 20mm O.d. Mouth Of Serum Bottles And Vials, Not For Lyophilization, Diameter Bottom: 13 Mm, Autoclavable: Yes,Diameter I