Threadz CBN Add-On Cart Breathe Chamomile can be attached to any existing 510 thread cartridge, allowing you to mix and match with your favourite cannabinoid and terpene profiles. This cart is a 5:1 THC:CBN ratio distillate and offers a chamomile flavour with gentle notes of apple and a honey-like sweetness. Must be attached to an existing 510 standard thread cartridge. Cannot be used individually.