These shrink fit extensions work with existing tool holder inventory, includingcollet chucks, shrink-fit holders, hydraulic chucks, milling chucks, end mill holders, etc.,with shank sizes of 0.125, 0.1875, 0.25, 0.375, 0.50 or 0.625. The devices have greater rigidity than collet extensions, and the extended reach and slim design fits tight clearances.
