37 Piece, Screw Driving Set With Tough Case, Designed To Meet The Demands Of Working Professional Contractors, Each Bit Is Cut From Shock Resistant Tool Steel & Features An Advanced Hardening Process That Greatly Reduces Wear, Snub Nose Design Fits Perfectly Into Hex Socket Adapters, Tips Are Precision Ground To Seat Firmly Into The Screw Head, Tips Come In A Variety Of Sizes & Styles To Accommodate All Commonly Available Screws, Includes Phillips Bit Tips: (1) No.1, (10) No.2, (1) No.3; Slotted Bit Tips: (1) No.6, (2) No.8, (1) No.10; Square Recessed Bit Tips: (1) No.1, (6) No.2, (1) No.3; Double End Power Bits: (2) Phillips No.1/Slotted No.6, (3) Phillips No.2/Slotted No.8, (3) Phillips No.2/ Phillips No.2; (1) 1/4" Magnetic Nut Setter, (1) 5/16" Magnetic Nut Setter, (1) Compact Magnetic Drive Guide, (1) 3-1/2" No.2 Phillips Power Bit & (1) 3-1/2" No.2 Square Recess Power Bit.