GREY PNEUMATIC 1243RD 3/8 DRIVE Standard/Deep Sae/Metric Impact Set 43 PIECE GP1243RD. Set contains Fractional sizes 5/16″ to 3/4″ and Metric sizes 8mm to 19mm in bothstandard 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. 8 Pieces Fractional Deep Length Sizes. 12 Pieces Metric Standard Length Sizes. 12 Pieces Metric Deep Length Sizes. Powered by SixBit’s eCommerce Solution.