Spectra Flange Kit - 20mm, 24mm, 28mm or 32mm
 
This Flange kit includes one neck flange (see size options below), one back flow protector, one duckbill valve and one tube. It is compatible with Spectra S2, S1, S9, M1 Breast Pumps.
 
1 neck flange (20, 24, 28, or 32mm)
1 back flow protector
1 duckbill valve
1 tube
Compatible with Spectra S2, S1, S9, M1 Breast Pumps