Alloy Steel Long Arm Allen Key Ball Point End Hex Wrench L Shape 1.5-19mm Metric

The ball-point end allows the wrench to engage a hex fastener at angles up to approximately 25° off-axis. This is useful for reaching bolts in recessed or obstructed locations. The flat (standard hex) short end provides full-face contact with the fastener socket and is used for final tightening where maximum torque is needed without slippage risk.

Measure the hex socket opening on your fastener with a caliper or test-fit with a known key. Common sizes: M3 (3 mm) for small machine screws, M4–M5 for bicycle components and furniture bolts, M6–M8 for automotive and structural fasteners, M10–M19 for heavy machinery and large structural bolts. When in doubt, order the size that matches your fastener's socket width across flats.

These wrenches are machined from S2 alloy steel, which is hardened for resistance to rounding and deformation. For high-torque final tightening, always use the flat short-arm end rather than the ball-point end, as the ball-point geometry reduces contact area and is not rated for maximum torque loads. For torque-critical fasteners, refer to the fastener manufacturer's specification.

S2 alloy steel has moderate corrosion resistance. For use in damp environments or outdoor applications, wipe the wrenches dry after use and apply a light coat of machine oil periodically. Avoid prolonged exposure to moisture or corrosive chemicals to maintain the surface finish and dimensional accuracy of the hex profile.

These are metric hex key wrenches only, sized in millimeters (1.5 mm through 19 mm). They are not interchangeable with SAE/imperial hex keys (measured in inches). Before ordering, confirm your fastener uses a metric hex socket. Most European-standard furniture, bicycles, and machinery use metric hex fasteners.

Multi-packs are useful when you need the same size in multiple locations simultaneously — for example, stocking a workshop toolbox, equipping a field service kit, or keeping a spare on hand for a frequently used size. The per-unit cost decreases with larger packs, making them more economical for professional or repeated use.

No. These are hex (Allen) key wrenches designed exclusively for hex socket fasteners. They will not fit Torx (star-drive), Phillips, Pozidriv, or slotted fastener heads. Using the wrong tool type risks damaging both the fastener and the wrench.