V-Thread, A-Thread, Zero-Thread Ice Anchors: What's the Difference?
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Ice climbers will build several different kinds of "threaded" anchors, drilling holes into the ice that connect at the back and then running cord or the rope through those holes. It may feel like the names are used interchangeably, but they can have specific meanings and each of those different anchor types have their pros and cons.
Me favorite ice screw is the Blue Ice Aero screw, which can be found here.