A precision ground instrument for macerating tissue. Rod and barrel are interchangeable. Rod is ground its entire length and can be reversed for double life. Rod fits Cat. No. 8124-10 Flex-Grip Chuck, forming a flexible coupling to the motor drive when mechanical operation is desired. Ground section of barrel 82mm. Overall length of barrel 125mm. Length of ground rod 240mm. Barrel clearance of .13mm to .2mm meets G.S.A. specifications.