Can’t slow your reaction time enough? Collector Tethers Just-N-Time Button trans brake buttons deliver an amazing range of adjustability and has been NHRA accepted for all classes. Just-N-Time buttons use a combination of 6 color coded springs, multiple mounting positions and a selection of spacers to offer you maximum adjustability. The included spreadsheet offers over 100 button release speeds accurate to + / – .002 and the selection is that simple–no tools needed. Plus everything is stored in a handy case to keep in your race car allowing you to make quick adjustments right in the staging lanes! Made in America, Collector Tethers Just-N-Time Button trans brake buttons deliver infinite adjustability for untold winning performances.