OCB metal grinders are durable, four-piece aluminum herb crushers featuring sharp diamond-cut teeth, a magnetic lid, a pollen sieve, and a kief collection chamber. [1, 2, 3]

Key Features & Sizes

• Construction: Four-piece modular design made from sturdy anodized aluminum with a smooth matte finish.

• Size: 50mm diameter for greater capacity and a comfortable grip. 

• Components: Includes a magnetic-closure grinding lid, sharp teeth chamber, fine-mesh pollen screen, and a bottom collection tier with a scraping tool.