3/8 Sq. Dr. 11 Piece Metric Impact 6 point Socket Set 8-19mm Impact Socket Size: 3/8" Drive Shape: Square Opening: 6 pt. Includes: SKU OUTPUT SIZE 13400M-8 8mm 13400M-10 10mm 13400M-11 11mm 13400M-12 12mm 13400M-13 13mm 13400M-14 14mm 13400M-15 15mm 13400M-16 16mm 13400M-17 17mm 13400M-18 18mm 13400M-19 19mm