Lathe tool posts and tool post holders support cutting tools on manual or CNC metalworking lathes. Lathe tool posts provide a base for securing and positioning tool post holders. Tool post holders hold cutting tools at a specific angle for machining workpieces on a lathe. Tool post and holder sets include a tool post and multiple tool post holders. Lathe toolholder bushings align and secure drills, reamers, boring bars, and other round-shank cutting tools in CNC lathes and turning machines.