10pcs Combination Spanner Wrench Set Open End Torx & Hex Spanners Metric 4-11mm

The set covers metric sizes from 4 mm to 11 mm — ten individual spanners in total. This range addresses the most common fastener diameters found on bicycles, small appliances, and light mechanical assemblies.

The open-end jaw grips standard hex-head bolts and nuts from the side. The Torx profile fits star-shaped T-head fasteners common on bicycles and electronics. The hex profile engages socket-head cap screws and grub screws. Having all three on one wrench body reduces tool changes during mixed-fastener jobs.

These wrenches are made from chrome vanadium steel and are suited for hand-torque applications such as sensor brackets, trim fasteners, and light underhood work. They are not rated for impact driver use or high-torque applications requiring a torque wrench.

The polished chrome finish slows surface oxidation under typical storage conditions. For long-term storage in humid environments, wiping the spanners with a light machine oil after use is recommended to maintain the finish.

Yes. The Torx profiles in this set fit T-head bolts commonly used on bicycle stems, disc brake rotors, and derailleur mounting bolts in the 4–11 mm range. Confirm the specific Torx size required for your component before use.

For hex-head bolts and nuts, measure across the flats (the parallel sides) with a caliper or match against a known metric size. For Torx fasteners, the T-number is usually stamped on the fastener head or listed in the equipment manual. This set covers 4–11 mm metric, which corresponds to T10–T30 Torx and M4–M10 hex cap screws in most applications.

These are metric-only spanners. While some metric sizes are close to SAE equivalents (e.g., 11 mm ≈ 7/16"), using metric tools on SAE fasteners risks rounding the fastener head. For SAE fasteners, use a dedicated SAE wrench set.