10Pcs 0.75 Inch PVC Nipple Male to Male Coupling Adaptor of Thread Plumbing PIPE | eBay
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Adaptor Coupling | Pipe Connection | Civil & Drainage | Fernco - Global leaders in flexible couplings, drainage & plumbing systems
Amazon.com: FangKingNo5pcs 1.25Inch White PVC Pipe Coupling Adapter Pipe Fittings couplers (Slip to Slip) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use (Pack of 5) (1 1/4") :
Adaptor Couplings - Fernco
Model #362 | Flanged Adapters/Dismantling Joints | Connection Fittings