Air Layering Root Propagator Feature: 8Small, 4Middle, 3Large. Created especially with the cutting globe design, grafting ball can help your cuttings get stronger roots and thus reproduce more mature trees faster than the normal spread method. SAFETY LOCK: The air propagator designed with automatic buckle which interlocks with each other and secures on the branch to hold the propagator in place even without a stem underneath. Also, you can use plastic ties to hold the rooting box securely. STRONG & FAST RESULTS: the air layering plant propagator pod is especially created with a cutting globe design which helps your cuttings achieve stronger roots to reproduce a more mature plant faster than normal propagation methods. The tree rooter ball allows you to see propagation results within 6-8 weeks after installation. INNOVATIVE DESIGN: the air layering pods uses the ancient method of Air Layering which promotes roots to grow directly on branches under high temperatures and pressures,