The CARLISLE BRASS® dust excluding drive-in socket for flush bolts is designed for insertion in concrete floors. It features a spring-loaded dust cover and a sprung central section that depresses when the flush bolt is engaged and returns to the top when disengaged, preventing dust and dirt from entering the hole. This socket is ideal for areas with concrete floors where traditional flush bolt plates may fill up with debris over time. It can be secured using glue or set in wet concrete, with slots in the shaft aiding secure fixation.