Conical burr
A burr set with a cone-shaped inner burr inside a ring burr, common in compact grinders.
Conical burrs are efficient and tend to be more affordable and compact, which is why most hand grinders and entry-level electric grinders use them.
They produce a slightly broader range of particle sizes than flat burrs, which many people enjoy for everyday coffee.
Why it matters for small spaces
Most small-space grinders are conical, so understanding them helps set realistic expectations for a compact setup.