Bosch PKS55A uses dust box to collect the saw dust.
This was a great feature of the saw and sets it apart from all other circular saws.
However after years of use they can break so to get a new replacement is wonderful.
Most circular saws either make a lot of mess unless connected to a vacuum system.
The dust box is a great way to make less mess and have the freedom to cut wood anywhere.
You can't stop all the sawdust falling or flying around, but this box catches a great deal. Due to the size of it you need to empty it regularly, but the alternative is to spend hours cleaning up dust, i.e. fine wood particles from all your surfaces. For a relatively small price you can make your life just that little bit easier.
Well made attachment to the Bosch circular saw to collect saw dust directly from the saw rather than falling on the floor. It is very effective and cost effective, really a must.