Pack of 120 Black / Orange / Purple / Green (30 each color) Clone Collars - Use as replacements or for new projects. Specifically designed for 2" Net Pots, DIY Cloners, and Clone Machines. Guaranteed to work in all name brand and generic hydroponics and aeroponic cloners that use a 2" Clone Collar. Premium Neoprene is the best material for Clone Collars. Long lasting, Durable, Non-Toxic, Sterile, and Gentle on your plants. Advanced 8 spoke design provides more options when compared to basic collars. When used in custom built DIY cloner, make sure to use a 1 3/4" hole saw for a perfect fit.