Single/double pulley with two attachment points.

This is a remix of the excellent pulley set published on here by Meister Edel. His third pulley model with eyelets is wonderful. But when making contraptions with my son to hoist stuff and learn about leverage, I felt the pulley's lacked two features.

1. The pulley's needed a second anchor point to attach stuff too, in order to make more complicated pulley systems.
2. I missed a ‘double pulley’ system to increase capacity.

I would like to refer to his detailed explanation of how the pulleys work and how you can ‘oil’ the wheels to make them run smoother. PLA with plenty of perimeters (6 or more) is advised. PETG if you intend to actually do some proper lifting with it. No guarantees on stuff snapping, if you want to do serieus pulley work, buy stuff in metal.