Dimensions: 2.5" diameter x 1.8" height Material: Aluminum Razor sharp diamond-shaped grinding teeth Magnetic Top Enclosure Steel micro mesh screen to filter pollen Separate pollen chamber Free pollen scraper included Free gift box included ●Aluminum alloy material, CNC precision machining ●Anodized surface treatment, bright color and high resolution. ●Compared with the old zinc alloy, the aluminum alloy has more acid and alkali resistance and has a longer service life. ●4-layer design, the first-2 layers are upper and lower grinding teeth, magnetically fixed, powerless knob, the #1 process of spice grinding ●Layer 2-3 is fixed by button cover and equipped with filter screen. for the #2 process ●The 3rd-4th layer is fixed by the silicone ring, the filter screen sinks down to the 4th layer, and it is equipped with a plastic scraper.