Bosch Professional 1-Piece Spanner Set (8/10/12/13/14/15/16/17/18/19 mm, in Bag) – Amazon Exclusive

Product Information

Combination spanners are a combination of a box-ended spanner and an open-ended spanner. One side has a closed ring for hexagonal or square nuts, and the other end is an open U-shape. Head Type – There are different head types that you will find with different spanners. Open-ended spanners are the type that look almost like a C shape. These are really easy to slot onto the bolt but can be a little frustrating if you are new to working with spanners as they can “slip off” if you aren’t careful. Ring head spanners are literally designed like a ring so a closed design which you push onto the nut or bolt. This can make them slightly harder to position but means that they are more fixed in position once they are where you want them! Most spanners are made from steel, which is a mixture of iron and carbon. Some spanners are made from titanium.

Sometimes, you will find spanner sets that come with a material case. These are obviously going to be your cheapest, lightest and most compact options. So they are generally a good idea if you are wanting to take your spanners with you to different jobs and places. However, a material case isn’t going to always be the best option to keep your spanners safe and protected – nor is it going to be waterproof. A toolbox is not complete without a set of spanners. When nuts or bolts need tightening or loosening, you need the best combination spanner, ratcheting spanner or adjustable spanner that you can lay your hands on. Construction The confusion comes from American English, where the word ‘wrench’ refers to both a spanner and a wrench. What are the different spanner types? Ring spanners have round rings at either one or both ends. The heads fit either hexagonal or square bolt heads and should be able to loosen tough bolts.

Bosch Ratchet/Spanner Set 10pc 1600A016BU

Imperial or Metric – As most of the UK moves towards metric measurements (mm and cm), you will find that spanner sets are doing the same, with measurements in mm or cm to describe the sizes of nuts and bolts that each spanner will be compatible with. However, if you are still wanting an imperial set (measured in inches) then these can be found!

Double-end spanners have open ends at both ends. These spanners are most widely used, with both ends able to hold nuts and bolts within them. Ratcheting spanners are very popular – you don’t have to disengage the spanner head from the nut or bolt each time you make a turn.

A reversible ratcheting spanner lets you change direction from tightening to loosening and vice versa , again without removing the spanner head from the bolt. Imperial measurements have largely been replaced with metric sizes these days. The most popular sets include spanners ranging in size from 8 – 19 mm.