PROGRIP 900500 Tool Box Tie Down Truck Bed Anchors Aid used in tool box or truck box tie down or anchor Ideally used by construction workers or truck owners Anchors designed with coated finish, allowing vehicle and box to remain unscratched To install, drill hole to align truck box anchor next to bed rail inside truck box and tighten Pack of 4, Tool Box Tie Down Truck Bed Anchors comes with mounting hardware Patented truck box anchor hold down allows a truck box to be installed on the pickup truck side rail without drilling Coated to prevent damage to the vehicle paint