The Grey Pneumatic 1643RD is a 43-piece set of 3/8-inch drive 12-point standard and deep impact sockets, suitable for both SAE and metric measurements. This set offers a variety of socket sizes for versatile use in automotive repairs and maintenance. Set contains 12 Point Fractional sizes 5/16″ to 3/4″ and Metric sizes 8mm to 19mm in both standard and deep lengths plus a 3″ extension/ 3/8″ x 3/8″ universal joint and 1/4″ hex x 3/8 square adapter. 8 Pieces Fractional Standard Length Sizes 5/16. 8 Pieces Fractional Deep Length Sizes 3/8. 12 Pieces Metric Standard Length Sizes 8mm. 12 Pieces Metric Deep Length Sizes 8mm. Universal Joint(s) 3/8.