The American made interchangeable turning tool handle accepts all Full Size Simple Wood Turning Tools, or other tools with a 1/2" dia round tang CNC machined solid aluminium well-balanced handle with comfortable foam grip. 17" overall length x 1-3/8" diameter American made in Ramsey, Minnesota by Harrison Specialties, a family owned and operated CNC machine shop Tools are easily changed by loosening the two stainless steel Allen set screws with the 1/8" allen key that ships with this handle Easily identify your lathe tools with color coded handles