Be aware that this adds more solid bulk that you will pull down the abseil
Knot block with safety Carabiner
This assures that if people rig on the wrong rope i.e. the pull rope won’t fall.
A useful block to use when tying a guided Abseil when vector forces will be added to the block. This is easy to untie.
Biner on Biner ??
Figure 8 releasable Block
This allows you to change the wear point of the rope by slipping it. In the event of an emergency it allows you to lower the abseiler.