This half of a press wheel assembly mounts on the seed-metering unit of a precision seeder. It runs alongside the opposite half to form the complete wheel that firms the seed trench after the seed is placed. The two halves together create the contact surface that presses soil around the seed for consistent emergence. A worn or missing half causes uneven soil compaction, leading to variable seed depth and poor germination. This component is the original manufacturer's replacement, machined to the same profile as the original so the two halves mate correctly without gaps. When replacing one half, inspect the bearing and hub for wear and replace the retaining hardware if damaged.