HHIP 1/2-inch Bent Tail Lathe Dog Bent lathe dogs are a type of lathe dog that can engage with a chuck jaw or driving faceplate slot. They are used to clamp workpieces and transmit the rotary motion of a machine's spindle to the workpiece. When using lathe dogs, it is important to be careful as it is easy to get snagged on them. Some tips for using lathe dogs include using headless setscrews that do not protrude above the dog's outer surface and counterbalancing or reducing spindle speed if the rotating mass of the dog setup is not balanced. Manufactured from high tensile, malleable cast iron. Includes a "V" groove in the body that helps with clamping round jobs firmly. Also includes square headbolts.