Cut your joint prepping time in half with the EF420 Grinder Cone Filler, a 5.5-inch travel-friendly grinder that makes it ridiculously easy to roll a joint! This cheap grinder is not just there to help you grind your weed but to roll your joint too. Here’s how you use it: put your dankest weed into the grinder portion on the bottom and when grinded finely, place your pre-rolled cone over the long end. When your pre-rolled cone is in place, flip the weed grinder cone filler upside down and let it make its way into the rolling cone and watch a joint be created right before your eyes! It is really that simple, and very much a full-proof method to quickly rolling the perfect joint. Say goodbye to your other plastic weed grinders you won’t be looking back!