The Boss is the bar feeder for long bars which has been sold the most in the world with more than 30,000 installed units. The Boss 551 is an automatic bar feeder suitable for lathes with fixed and mobile headstock, bar diameters between 5 and 51 mm and lengths from 1,000 to 4,400 mm. It is simple to use for the operator and has a very solid structure: it is the Boss!