26 Piece 1/2" Square Drive, 6-Point Impact Socket Set. Contents: 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 32mm, 33mm, 34mm, 35mm, 36mm. Packaging: Blow-Mold case. Assortment starter.