ROCKWELL-DELTA 20" Drill Press Operators Parts Manual 0641,ROCKWELL-DELTA 20" Drill Press Operators Parts Manual 0641,11, This is a reproduction, not a photocopy, of an original Delta-Rockwell 20" Drill Press Parts Manual, This parts manual covers a lot of the accessories that are not normally covered in a standard parts manual,Column and Cradle, Discover your favorite brand Best Price New Styles Every Week Thousands of the best online stores and brands. 0641 ROCKWELL-DELTA 20" Drill Press Operators Parts Manual.