to 23 show another embodiment of the invention where plural snap in modules 8 u2033 are arranged inside a tool box 200 the modules are as described in conjunction with fig5 and 6 above the tool box 200 preferably has a handle 201 a box portion 202 and a lid 203 the modules 8 u2033 are arranged to be held in a recess 19 u2032 preferably tool holders 110 111 are arranged inside the tool box in areas not occupied by the recess 19 u2032 further technical features of the modules have the same reference numerals as described in conjunction with fig5 and 6 fig2 to 26 show a further embodiment of the invention where plural snap in modules 8 u2032 u2033 are arranged inside a tool box 200 u2032 the modules are as described in conjunction with fig5 and 6 above the tool box 200 u2032 preferably has a handle 201 u2032 a box portion 202 u2032 and a lid 203 u2032 the modules 8 u2032 u2033 are arranged to be held in a recess 19 u2033 preferably tool holders not shown are arranged inside the tool box in areas not occupied by the recess 19 u2032 further technical features of the modules have the same reference numerals as described in conjunction with fig5 and 6 fig2 to 29 show yet another embodiment of the.