Here we have a safe and easy way to remove the lids off ECU's, why risk using a screwdriver or pry bar, we designed this system years ago when we started remapping and realised there wasn't a safe removal system on the market, so we have decided to sell them to help others. The tools work on most ECU's with bolt on lids we have tested them on Bosch , Siemens, Denso, Delphi and other ECU's. Supplied in the kit is 6 tools which are made of stainless steel and take a 4mm Allen key these have 25mm of lift so plenty of lift to remove the lid without any damage to the circuit board . We have a video on YouTube of them in operation using brake cleaner to melt the glue, Also works with heat gun which we will do a video for soon, we advise to use 2 or 3 tools the opposite end to the heat sink on Bosch ecus and this is why we supply 25mm tools to be able to remove lid without circuit damage. These tools are made of stainless steel so won't wear out easily. Please watch our operation video: