This is a full set of replacement seal rings for the Storz & Bickel Crafty Vaporizer. This Crafty Seal Ring Set includes 3 mouthpiece seal rings, 3 small base seal rings, 3 large base seal rings, and 2 filling chamber seal rings. In total, you'll receive 11 replacement seal rings for your Crafty Vaporizer. 

This is the official O-ring set for the portable Crafty Vaporizer made by Storz & Bickel. When you buy this set of O-rings for your Crafty, you're given the assurance that they're the genuine parts you need and not fake knock-offs. 

You'll know it's time to replace your O-rings when you see vapor seeping from joints or if connections between the different parts of your Crafty come loose.