Ring spanner 20x22 deep offset

The ring encloses the hexagon of the bolt or nut all the way around. As a result, the wrench grips more firmly than an open-end wrench, and it is less likely to slip or damage the corners of the nut. This makes a box-end wrench suitable for tightened connections where you need to apply serious force.

When do you choose a deep offset ring spanner?

A deep offset is useful when the bolt or nut sits on a protruding threaded end, or when you have to work in a recessed position. The handle then clears the surrounding parts and your knuckles stay out of the way. If the nut is simply on a flat surface, a straight or slightly offset version is often enough too. So look at the space around the fastening before you make a choice.

Size 20 and 22: for which bolts and nuts?

The numbers 20 and 22 indicate the width across flats in millimetres, i.e. the distance between two opposite faces of the hexagon. Always check that the size of your bolt or nut matches one of the two rings. A spanner that is too loose can round off the hexagon. If the size is hard to determine, measure the distance between two parallel faces.

Use and maintenance

Place the ring fully over the nut and preferably pull the wrench towards you instead of pushing. This gives you more control if the connection suddenly comes loose. Do not use an extension pipe over the handle unless the manufacturer permits it, as too much leverage can overload the wrench. Wipe the wrench clean after use, so that dirt and moisture have no chance to cause damage.

Frequently asked questions

What does 20x22 mean on a ring spanner?

These are the two widths across flats in millimetres. One ring fits size 20 and the other fits size 22.

What is the difference between a deep offset and a straight ring spanner?

With a deep offset spanner, the rings sit lower than the handle. This gives your hand extra room and is useful with protruding threads or hard-to-reach nuts.

Is a ring spanner stronger than an open-end spanner?

A ring spanner surrounds the nut completely and therefore grips better. This reduces the risk of slipping and is beneficial for seized connections.