This spacer mounts between the cradle and the diamond drill motor to increase the bit capacity from 10 in. to 14 in. For use with models (4115, 4120, 4115-21, 4115-22, 4120-211, 4120-22).
Heavy-duty: Withstands constant use
Versatile: Increases DYMO-RIG bit capacity from 10" to 14"