Neoprene Inserts (a.k.a. Cloning Collars) support cuttings propagated in net pots without the use of artificial media. Manufactured from a durable, soft material, they are designed to hold and protect new cuttings without damaging any of the plants delicate tissue. A slit from the center to the outside edge makes inserting and removing clones simple. Ideal for use with clone machines, aeroponics and hydro-systems. Designed for cloning machines, these inserts are preferred over plastic lids because they prevent the cutting or clone from moving around. Simply place the stem of a new cutting into the slit in the insert and watch as it provides support to your plants while still protecting their delicate tissues.