DEWALT DW6601 1/8 Inch General Purpose Bit (5-Pack) One flute design provides increased chip clearance for fast cutting (DW6601, DW6605, DW6609) Left-hand spiral directs chips and dust into wall cavity for a cleaner work environment (DW6601, DW6605, DW6609) Piloted bit allows for effective cutting around outlet boxes and other objects (DW6605, DW6609) 1/4-inch diameter shank provides increased durability (DW6609). Flute adds space in order to consolidate debris for easy cleanup