WSE blades are high quality saw blades which can be used on a variety of hand-held oscillating saws.  Some of the key manufacturers of these tools are Fein and Bosch.

There are three primary types of WSE blades:

1) Universal blades which cut through aluminium, copper and steel up to 2mm thick, hard plastics and timber with embedded nails. 

2)  Standard wood blades which quickly and cleanly cut through timber

3) Japanese-toothed blades, which are designed for even faster, cleaner cuts in timber

Each blade type is available in several sizes. The blades are attached to the different brands of saws by using an adapter. Different adapters are used for different brands of saw, as each manufacturer has it's own proprietary attachment mechanism.

Last longer - WSE blades are bimetal construction and therefore are far more durable than competitor's blades. In addition, all WSE blades can cut through nails - even those that are designed for cutting timber.  

More versatile - the adapter sytem allows end users to use one brand of blades for all their oscillating saws once the adapters have been fitted to each saw. Otherwise, they'd have to carry separate blades for each brand of saw they own (i.e. different blades for Fein and Bosch).

Better value - because the blades last longer and cost about the same as other blades, WSE blades offer customers better value for their money.

WSE blades are more cost effective: they last longer and you only replace the cutting blade, not the fixing mechanism. This fact also makes them more environmentally friendly than other blades.

Users who own more than one brand of saw can use the same blades on all their tools once the adapters are fitted, making them easier to use and more convenient than other blades.

These blades are made in Germany by a company called Wielander and Schill Engineering. This company manufactures reciprocating saws and sawblades for the automotive industry which it distributes globally.