STI Prep/Master 2807

The STI-2807 is the smallest machine in the P/M line, purpose-built for small to mid-sized commercial jobs and residential garage floors. Despite its compact footprint, this machine delivers the same professional-grade performance expected from larger grinders—producing flawless results in grinding and polishing applications.

Equipped with a durable 7.5 HP motor and a variable speed drive, the STI-2807 adjusts easily to suit a range of surface conditions and materials, including concrete, terrazzo, marble, and stone. Whether you’re prepping, leveling, or polishing, the STI-2807 offers reliable power, precision, and versatility in a highly maneuverable package.