Size: 3/8F x 1/4" M, 3/8" F x 1/2" M, 1/2" F x 3/8" M, 1/2" F x 3/4" M, 3/4" F x 1/2" M
1/4" Dr. 21 PC Socket & Socket Bit Set, Inch
1/4" Dr. 21 PC Socket & Socket Bit Set, Metric
1/4" Dr. 49 PC Socket & Socket Bit Set, Inch
1/4" Dr. 50 PC Socket & Socket Bit Set, Metric
1/4", 1/2" Dr. 101 PC Socket & Bit Set, Inch