Human Grade 4-Piece Grinder – 2-Inch & 2.5-Inch Sizes

The Human Grade 4-Piece Grinder is available in two sizes: the Grinder 1A at 2 inches (50 mm) and the Grinder 1B at 2.5 inches (63 mm). Both are made from lightweight aluminum and use the same four-piece layout with a grinding chamber, integrated screen, bottom collection chamber, and included scraper tool.

Choose the size that fits your preference. The 2-inch Grinder 1A has the smaller overall footprint, while the 2.5-inch Grinder 1B provides a wider option.

Key Features

• 4-Piece Design: Upper section, grinding chamber, integrated screen, and bottom collection chamber

• Material: Lightweight aluminum

• Integrated Screen: Allows finer particles to pass into the bottom collection chamber

• Scraper Tool Included: Helps retrieve collected fine particles from the bottom chamber

• Two Sizes: 2" (50 mm) Grinder 1A or 2.5" (63 mm) Grinder 1B

• Color Options: Black, Green, Gunmetal, Light Blue, Purple, and Red

Choosing Between the 2-Inch and 2.5-Inch Sizes

The Grinder 1A measures 2 inches (50 mm) across, making it the more compact of the two options. The Grinder 1B measures 2.5 inches (63 mm) across and gives you a larger-diameter grinder.

Both sizes use the same four-piece aluminum configuration, so the main documented difference is size. Choose the 1A if you prefer the smaller footprint or the 1B if you prefer the wider format, or browse our grinder collection to compare other designs and sizes.

How the Four-Piece Design Works

The upper section and grinding chamber handle the grinding process, while the integrated screen separates finer particles into the bottom collection chamber. This keeps the lower collection area separate from the main grinding chamber.

An included scraper tool provides a simple way to retrieve the finer particles collected in the bottom chamber. The removable sections also allow each part of the grinder to be accessed separately.