RC Crane block, pulley block 1:14 scale

Hi everyone, this is some sort of a crane block i've created and printed to my 1:14 scale RC Crane i'm building at the moment. This is how it works: https://www.youtube.com/watch?v=TjjB38UQ3pE
If You liked it, there are some other videos of this crane on my Youtube channel.
https://www.youtube.com/channel/UCxihaiIMuYIkq3V1vrrnGMQ
You need to print to 2 copies of it and connect them with a glue.
Greetings