Air Layering Propagation Kit: Applying the air layering technique encourages faster initial rooting and creates offshoots with 2X growing rate, increasing tree survival rate. Safe and Non-damaging:Our rooting ball propagation kit maintains the integrity of the parent plant, works on both indoor and outdoor plants.It only uses a small branch on you want to clone, so there is little interference or damage to the parent tree or natural growth. Easy to Install: Our rooting ball make the process of packing the branches much easier than the old way of using plastic wrap. Corner buckles, bottom sheets & zip ties together fix the ball at the proper place without professional. and Reusable: The plant root grow box is made of high quality matetial, sturdy and reusable. Depending on different species of plants, give you propagation results after few weeks to 6 months. Colour:Black Material:plastic Size:S+M+L Package Contents: 15 x Grafting Rooter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.