Combination wrenches

Combination spanners combine ring and open end profiles. Due to presence of 2 working parts these devices allow not only to mount but also remove different threaded parts, including hard-to-reach and damaged ones.

Types of combination spanners

Tools differ from one another by the following main parameters:

• Type of ring head. For example, it can be made in the form of the ratchet or socket. Moreover, there are products on the market, which are equipped with the joint for convenient work in conditions of narrow space. Some ratchet spanners have a switch providing quick change of rotation direction.
• Production material. As a rule, it is chrome-vanadium or tool steel. Many products are covered with zinc, chrome or other material for corrosion protection.
• Size of the opening. Both functional elements can be made for components of one diameter or have different parameters. Generally, there are the models with the following dimensions in catalogues: 4 × 5, 7 × 8, 8 × 10, 10 × 11, 10 × 13 mm.

Manufacturers produce both specific tools and kits. They include products with different characteristics. The more products in the kit are, the wider the sphere of its appliance is.

Tips on combination spanners use

1. Use the tools in strict accordance with their purpose, following manufacturer’s recommendations. Particularly, size of the opening should coincide with the component diameter.
2. Before starting works make sure that the tool working surface contacts the fastenings along the profile height.
3. From time to time examine tools for shears and other damages. Don’t use tools with defects.
4. Don’t apply excessive force: slowly increase the effort making at rotating.
5. Wipe the tool with soft cloth after every use. Keep it clean.

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