Smartbolt Instructs You On Tightness Of Bolt

Who would have thought that the humble bolt has a chance to jump aboard the “smart” bandwagon? Well, it ain’t called the Smartbolt for nothing, featuring a small indicator disk on top that shows you via color codes on just how tight it is. This visual tension indicator will begin with red and turns more and more black the tighter it gets. There is a more precise version for mathematics-loving people who want everything down to the right percentage, turning from yellow to green at 90% tightness and black at 100%.