Large soldering mat built-in scale ruler, 124 screws position and 4 pcs magnetic parts areas, 18 notches and 49 spare unit to classify precision parts, which improve your work efficiency and make maintenance platform more clean and tidy. Heat insulation mat can resist the temperature as high as 500°C and is anti-corrosive also. Both surface and back side are adopting the anti-slip design, it won't slide around on your counter or station, Large repair mat is an ideal product for soldering electronics assembly or electronics and circuit board repair, repair for smart phone, laptop, computer, sports watch, camera, smart toy, eyeglasses etc. The large magnetic silicone work mat is made of high quality silicone, Non-toxic and odorless, easy to clean with soap and water,