Grinds and crushes the bait in fine detail. Mortar with pestle 1 pair 2.4 inches (60 mm) diameter targeted for ferry fish, shrimp feeding etc. This is a magnetic mortar. Great for grinding and crushing the bait to fry and shrimp The inside of the mortar and the tip of the breast are in a rough condition (bisque) without glaze, making it easy to clean and crush the bait and specimen. Quantity: Mortar x 1, Pestle x 1, Size (Approx.): Mortar Outer Diameter: 2.4 inches (60 mm) x Height 1.8 inches (45 mm); Pestle Tip: Diameter 0.8 inches (20 mm); Pestle Length: 3.0 inches (75 mm).