The ShoulderMaster SP1000 spreader trailers are engineered for the demanding work of road maintenance and infrastructure upkeep — from highway shoulders and rural access roads to municipal streets and construction sites. Whether you're spreading aggregate, gravel, or road base material, the electric over hydraulic drive system delivers precise, consistent output at every job, while the full-width 2.4 m spreader box impeller ensures even coverage in a single pass — reducing labour, saving fuel, and getting roads back in service faster.