|Pilot Diameter||6 mm|
are of the guided jaw type, they are constructed of the finest materials and special features of design and high grade workmanship ensure maximum life, accuracy and gripping power. The chucks are key-operated and a full range of sizes is available. All chucks are supplied complete with key and packed in attractive boxes.Bodies are made from special steel, the tapper jaw holes are precision bored on special machines.Sleeves are made from special steel,expertly heat treated and internally ground on three diameters.Jaws are made from special steel, expertly heat treated to toughen. The threads are cut on special machines.Screw rings are made from special steel, hardened and ground. The threads are cut on special machines.Key are made from special steel, hardened and blackened. Finish outside diameter, front and chamfer on the body, together with the outside diameter of the sleeve, are of a fine ground finish.