Open-end and 12-point WallDrive® ring combination. Contents: 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32mm. Overall Size (W x D x H): 400 x 285 x 70mm.