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″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″ 8 Pieces Fractional Deep Length Sizes 3/8″, 5/16″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″ 12 Pieces Metric Standard Length Sizes 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm 12 Pieces Metric Deep Length Sizes 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm Extension(s) 1143E, Universal Joint(s) 3/8″, Adapter(s) 3/8″.