The Alpha ST 212 and ST 320 bar feeders provide reliability, stability and ease of operation, the manufacturer says. Model ST 320 feeds round barstock from 0.12" to 0.78" diameter while Alpha ST 212 is designed to load small-diameter, round barstock from 0.078" to 0.47" using a positive mechanical device to advance barstock into the loading position. From this point, a nylon screw and gravity feeds the bar into the channel, thus eliminating multiple or failed bar loading. A synchronization system for use with high-speed sliding headstock machines and for running special materials is standard on Alpha ST 212 and optional on the ST 320.