This is a new GRAV “one-hitter” style cup bowl. Its a super dope bowl, those who have had 1 know what i mean. Perfect airflow/size. It hold exactly a huge rip. So no leftover burnt 2nds or wasted herb. I would say its the slide for people smoking flower that dont take those MASSIVE tube rips u see taken. A massive tube CAN be taken w this but its better when the contents are “looser” and ripped out of a 15-18” tube lets say.. 😂. Great addition to any smokers lineup, GRAV makes great adapters and accessories like this. Its also difficult to find a good/efficient 10mm slide thats not expensive it seems. Thanks for 👀. Shipping is $5. ☮️