RWS902 Systainer T Loc tool boxes with foam lining. These are very versatile boxes interlocking storage. These allow fitters to sub divide tools relevant to the job. So you only need to take in the tools required for the job at hand and at the same time keeping tools safe from damage by not just throwing them in a tool bag. These are great boxes to keep expensive tools in.

Please note priced per single box Photo showing two boxes is illustrating how the lock together.