Designed for use with the versatile Jacobs® Rubber-Flex® Collet which accepts and precisely centers both decimal and metric shank diameters.

Simple operation — One quarter turn of chuck screw allows nut to disengage back jaws. Tap shank sighting hole presents full view of tap square during changeovers.

Each chuck, with one interchangeable Rubber--Flex® Collet, handles a wide range of tap sizes to speed tap size changes.

Positive-drive chuck jaws always locate square of tap shank to ensure superior performance.

Available with choice of Jacobs®, round or square hole mounts.