Cali Crusher® presents the revolutionary American made Homegrown Grinder. This is the next level in grinder technology, packed with features unseen on any other grinder before. Most notable is our original 4-Way Quick Lock feature, eliminating cross threading incidents and jammed grinders. The screen is removable and upgradeable with the use of a small hex key*. HOMEGROWN Grinders are made of top shelf Aerospace MEDICAL GRADE aluminum with indestructible radial cut blades that are covered under a Lifetime Manufacturer Warranty! Notice that the bottom catch chamber is not only 2x larger than your average grinder's catch, but it also has our original smooth rounded contour design for easy access and finger scooping your pollen. We've taken every problematic feature of the classic grinder and redesigned it for overall improvement.