TEKTON WRN77164 Extra Long Flex-Head Ratcheting Box End Wrench Set with Store and Go Keeper, Metric, 8 mm - 19 mm, 6-Piece Extra long beam offers extreme reach and loads of leverage Box end heads pivot 180 degrees to easily get around obstructions 6-point openings snugly fit hex-shaped fastener heads, gripping the flat sides, not corners, to prevent round-off 72-tooth ratchet gears need only a 5-degree working swing arc Includes Store-and-Go Keeper with space-saving folding handle and nonslip grippers to lock in wrenches