Comparison : Item # CTD45701, Norseman/CTD 1/8"-1/2" Type B78-AGN 13 Hole Step Drill Bit TiN Coated
Item # CTD45721, Norseman/CTD 3/16"-7/8" Type B78-AGN 12 Hole Step Drill Bit TiN Coated
Item # CTD45731, Norseman/CTD 1/4"-3/4" Type B78-AGN 9 Hole Step Drill Bit TiN Coated
Item # CTD00694, 3/8" Norseman T-78-QR Gold Oxide Quick Release 1-Step Drill Bit w/ 1/4" Hex Shank