Flange Inserts 17/19/21mm for 24mm-30mm Collection Cup Breast Pump Converter
£2.95
15,17，19 ，21mm inserts to use with 24mm detachable. 24mm inserts to use with 27 mm detachable shield; Insert to use with Breast Pump 24 or 27mm detachable shield. It will reduce the nipple tunnels down to 15/17/19/21.
