Keep your bench clean and uncluttered with this hammer and mandrel organizer. It keeps everything right within reach and clears off more room for you to work! Designed to fit standard workbenches, the organizer is easy to attach to the side of the workbench with the screws provided. Once it is placed where you want it, simply place your hammers and mandrels in the corresponding slots. The hammer groove is 19" long and graduates from 1" to 1-1/2" wide. The mandrel holes are 3/4" diameter.