BONET Glass Work Lever Operated Self Centering Chuck is available in 3-Jaw (LOG-3). These chucks are manufactured out of high quality materials. The bodies are made of alloyed high strength cast iron. All other parts are made of special steels which are properly tested chemically and physically before use. These parts are then suitably heat treated and pass through stringent quality control tests, which ensure long service life. These chucks are used in Glass Work Industry to hold GLASS TUBES. These chucks have less gripping power than normal self centering chucks. One set of Reverse Jaws, Mounting Bolts and Operating Key is provided with chuck.