"Zap-Bac" Antibacterial Spout Adapter (green). Reduces a stubby spout from 7/16" to 5/16" (can be used for 2 years)

Item#: SPMICROADAP
$0.32
"Zap-Bac" Antibacterial Spout Adapter (green). Reduces a stubby spout from 7/16" to 5/16" (can be used for 2 years).