New, compact design provides increased capacity and better clearanceExtremely accurate Albrecht Key-Lock drill Chucks are the most accurate drill chucks availableUnique worm/gear arrangement transmits extremely high gripping force to the jawsShort length and integral shank provide exceptional rigidityThru-coolant feature is standard on all Albrecht Key-Lock drill ChucksNon-rotating hood - chuck is opened and closed via a hex key inserted into the side of the bodyBalanced for use on all CNC machines up to 7 rpmCan be operated in both clockwise and counterclockwise directionsThru-hole models enable the use of longer drillsStainless steel models with threaded mount for corrosive applications such as EDM