All IRWIN fastener drive bits are manufactured from industrial grade tool steel and tested to meet the highest standards for hardness and torque. Includes (1) each of: 2-1/2 Quick charge chuck. 1/4 Socket adapter x 2. 6 Quick change adapter. 3/8 Socket adapter x 2. #1 Phillips power bit x 2. 1/2 Socket adapter x 2. #2 Phillips power bit x 2. 1/4 Magnetic nutsetter x 1-7/8. #3 Phillips power bit x 2. 5/16 Magnetic nutsetter x 1-7/8. #1 PODIDRIV power bit x 2. 3/8 Magnetic nutsetter x 1-7/8. #2 PODIDRIV power bit x 2. T15 TORX power bit x 6. #3 PODIDRIV power bit x 2. T20 TORX power bit x 6. T8 TORX power bit x 2. T25 TORX power bit x 6. T9 TORX power bit x 2. T27 TORX power bit x 6. T10 TORX power bit x 2. T30 TORX power bit x 6. #1 Phillips power bit x 3-1/2. #2 Phillips power bit x 3-1/2. #3 Phillips power bit x 3-1/2. #2 POZIDRIV power bit x 3-1/2. T15 TORX power bit x 3-1/2. T20 TORX power bit x 3-1/2. T25 TORX power bit x 3-1/2. T30 TORX power bit x 3-1/2. #1 Phillips power bit x 6. #2 Phillips power bit x 6. #3 Phillips power bit x 6. #2 POZIDRIV power bit x 6