The M+R Granate (aka "The Grenade") is a precision single-hole pencil sharpener engineered by Möbius and Ruppert. Made in Germany of solid brass with a distinctive half-barrel shape, the device features a precision-milled body with a knurled grip. Its mechanical configuration supports pencil diameters up to 11mm, accommodating round, hexagonal, and triangular profile pencils with consistent dimensional preparation.

Characterized by its unbreakable construction and minimal spatial footprint, the Granate sharpener provides artists and professionals with a compact, durable tool for pencil maintenance. Its engineering tolerances enable uniform point generation across various drawing and writing mediums.