7pipe has put your grinder and your rolling machine in one easy to transport case. The 7pipe twisty glass blunt grinds your dry herbs for you and keeps them in a durable, reliable case. The tube where you both grind in and smoke out of is made with 2mm thick german Schott glass. This type of borosilicate glass is super tough and won't break with everyday handling. The clear glass acts as your catcher while you grind with the titanium nitride screw. This screw is gold-plated and is strong enough to keep grinding after many uses. The mouthpiece is attached to the titanium screw and is gold-plated as well. With this glass pipe you can either smoke it as it is or put it into a 14mm female joint and smoke it out of a bong. To release your ashes all you have to do is turn the screw clockwise and they will exit out the end.