20 Piece, Puck Screwdriver Bit Set, Set Includes Insert Bits: Phillips (1) P1, (7) P2, (1) P3, Square Drive: (1) S1, (3) S2, (1) S3, Torx: (1) T15, (1) T20, (1) T25, Slotted: (1) Sl6-8, (1) S18-10, Magnetic Drive Guide & Puck Magnetic Case, Insert Bits Made Of High Grade S2 Steel, Compact Magnetic Storage Case Allows Set To Attach To Most Metal Surfaces Such As Tool Boxes.