PVC Bank Fishing Rod Holder [DIY] DIY PVC Fishing Rod Holder for

Does anyone know what kind of bank rod holders these are?

Easy DIY PVC Fishing Rod Holder & Organizer for Storage

Make Your Own Rod Tube That Can Withstand a Lawnmower - Game & Fish

An Arduino-powered Fishing Pole With Automatic Casting And, 48% OFF

PVC Fishing Rod Holder (10 Place) – Cool Water Products

An Arduino-powered Fishing Pole With Automatic Casting And, 48% OFF

Handmade Fishing Pole Holder - 1-1/2 Diameter PVC Pipe With Steel

PVC and Rebar Rod Holder Catfishing

4 Pack Fishing Rod Holder, Rod Holders for Bank