Also known as Neoprene padded collars or clone collars.
Used with aeroponic propagating systems and will fit into 2 inch net pots.
Pre-slit for easy insertion of cuttings.
Place your fresh cuttings in the centre of the collar, leaf end up.
Then placed in the net pot and the system.
The bare cutting end then has access to the water from the tank underneath
Also, they can block the planting sites not used in the X Stream Propagator system.