KDT9902 Features: -The ratcheting box end needs only 5 degrees of sweep needed to move a fastener.-Surface drive nearly eliminates fastener rounding.-Flex head tilts 180 degrees at any interval.-16 Piece Metric Flex GearWrench Set. Includes: -The set includes: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 25mm.-GrearWrench products are warranted for life to be free of defects in material and workmanshipThe GearWrench Flex head wrench is built with spring washers which keep the head tight even after years of use. It has a sleek head design, which flexes and enables access to tight spots. It has a very unique wrench beam, and is slightly serrated (etched) on one side, so the mechanic can feel which way to pull. This set includes 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 25mm.. Warranty: -Sets & Kits do not have warranty/ see individual pcs for details.