Aquarium CO2 stainless steel check valve is used in the diffuser of CO2 equipment to prevent gas backflow hose inner diameter4mm

Aquarium CO2 stainless steel check valve is used in the diffuser of CO2 equipment to prevent gas backflow hose inner diameter4mm
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sku: 1005006044386313
$3.40-9%
$3.09
Shipping from: China
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