6-Piece Metric Flex Head Wrench Collection

This 6-piece collection of metric double ring wrenches covers sizes 8x9, 10x11, 12x13, 14x15, 16x17, and 18x19 mm — twelve of the most widely used metric fastener sizes packed into six dual-ended tools. Every piece is manufactured from chrome vanadium steel to the DIN 838 standard, delivering consistent dimensional accuracy and reliable torque performance across the full size range.

The angled flex-head design on both ends sets these apart from flat-profile alternatives. Each ring is offset from the shaft, letting you swing the handle through a tight arc when clearance is limited. Automotive technicians working around exhaust systems, brake lines, and engine accessories will immediately recognize the advantage: you can keep the ring seated on the fastener and still generate meaningful rotation even when neighboring components crowd the workspace. The enclosed box wrench set grips all six flats of a hex fastener simultaneously, spreading the load and protecting bolt heads from the rounding that open-end tools can cause under heavy torque.

Everything ships in a TT1-format red plastic tray. The tray drops into any Teng Tools roller cabinet or toolbox drawer built to accept the TT1 footprint, so the wrenches stay organized and visible. Each piece sits in a dedicated molded slot — pull one out, and the empty slot tells you exactly which size is still on the job. Total loaded weight is 1613 g.

Whether you are a professional mechanic, a maintenance technician, or a dedicated home-shop user, this collection delivers the access, grip, and durability that metric fastener work demands day after day.